[Supporting Gear] Are you still using "cheap snaps"? The physical reason why that 100-yen saving is killing the performance of your 30,000-yen rod
Hey there, future eging meisters.
Are you still sighing in front of the glass case at the tackle shop, staring at high-end reels and thinking, "If only I had this, I'd catch more..."? Or are you satisfied with spending 50,000 yen on a rod while using "value packs" of snaps and line cutters from the bargain bin?
I'm sorry, but I'm going to be blunt. The reason you aren't catching fish isn't because your reel is cheap. It's because you're ignoring the bottleneck (weak point) of the entire system.
It's like putting light truck tires on an F1 car and complaining that you aren't setting good lap times. No matter how high-performance the engine (rod and reel) is, if the tires (snaps and line) that transmit that power to the road (underwater) are trash, all that energy is lost.
In eging, snaps, polarized glasses, landing nets, life jackets... these are by no means "supporting roles." They are "critical components of your physical calculation device" for transmitting your intent underwater, feeding information back to your brain, and ensuring you secure your prey.
Today, I will provide a complete proof of why you should spend money on these four pieces of equipment that many anglers tend to underestimate, from the perspectives of "fluid dynamics," "optics," and "mechanical engineering." By the time you finish reading this, the contents of your shopping cart should look completely different.
Are you ready? I won't give you any spiritual nonsense about "God residing in the details." It's "Physics resides in the details." Lecture starts now.
1. [The Physics of Snaps] Just a piece of metal, yet the "fulcrum of action"
First, the smallest and most underestimated part: the "snap." For those of you who think, "Anything that connects is fine," and use cheap stuff from value packs, realize that you are throwing nearly 30% of your egi's darting performance down the drain.
A snap isn't just a connecting piece of hardware. It is a "pivot point" for converting the kinetic energy transmitted from the rod into the darting action (lateral displacement) of the egi. There is a clear rule of fluid dynamics at play here.
● "Darting freedom" determined by shape
There are two main types of snap shapes: "wide (round) type" and "slim (V-shape) type." Only by using these according to their physical purpose can you call yourself an advanced angler.
① Wide type (round shape): Darting specialty This is the type with a round, wide tip.
Physical characteristics: The range of motion for the eye (connection point) is wide.
Advantages: Because there is more "play" when the egi turns its head left and right, the darting amplitude (displacement) is maximized.
Optimal solution: "When you want to search a wide area for highly active squid." If you want to make the egi fly far and attract attention, physically, this is the only shape that makes sense.
② Slim type (V-shape/narrow shape): Sensitivity specialty This is the type with a narrow tip that firmly secures the eye of the egi.
Physical characteristics: Range of motion is restricted, and force is transmitted directly.
Benefits: Because unnecessary movement (play) is eliminated, "vertical movement (flipping)" and "bottom sensing ability" are improved.
Optimal solution: "Deep water or strong current areas". Or when you want to suppress darting and lure them persistently.
❌ Mindless choice: "It's cheap, so this is fine" → The characteristics of the shape contradict the fishing style you want, and the egi won't move.
⭕️ Physical choice: "I want to make it dart over a wide area today, so I'll use a wide type" → Unleash 100% of the egi's potential.
● The invisible noise called "sound"
There is another fatal reason why cheap items are no good. It is "metal fatigue and deformation". Cheap snaps have weak spring properties, and their shape distorts quickly after repeated opening and closing. A distorted snap interferes with the egi's eye every time you jerk it, creating a subtle metallic noise in the water that sounds like "click... click...".
I told you in the last article, didn't I? That squid hear sound through their hearing (otoliths). "Calculated sounds" like rattle sounds can be a weapon, but unintended metallic noise is nothing more than "unpleasant noise" to a nervous, large squid. Expensive snaps have strong spring properties due to special heat treatment and processing, meaning they are difficult to deform. In other words, they can remain "physically silent".
[Conclusion] If you choose from these three, you are "physically" guaranteed to be right
Don't skimp on a few hundred yen and lower your catch rate. These are the three snaps I trust that combine "rigidity" and "functional beauty".
1. [The King of Darts] Evergreen "E.G. Snap"
The classic wide shape. If you want to make your egi "act" to the max, this is the only choice. The strength of the spring material is abnormally high, and I don't feel like it would stretch even if a big squid came along. If you're lost, buy this.
2. [The Balance Demon] Yamashita "Egi-Oh Egging Snap"
An exquisite design that goes between wide and slim. It is calculated to bring out the performance of the "Egi-Oh" series the best. There are plenty of variations, including those with welded rings, and it is trouble-free.
3. [The Ruler of the Deep] Daiwa "Easy Snap"
A slightly slender shape that cuts through water well. This is the one to use when you want to reduce resistance and operate directly in deep water or places with fast currents. Its strength is also guaranteed.
2. [Visual Optics] Polarized glasses are not "sunglasses." They are "optical sensors"
"I wear them because it's bright"? Don't talk in your sleep. Polarized glasses in eging are not daily necessities for blocking sunlight. They are "high-performance optical sensors (radars)" for removing the "reflection noise" created by the giant mirror that is the sea surface and delivering subtle information from underwater to your brain.
Physically speaking, think of them as a device that maximizes the "S/N ratio (Signal-to-Noise Ratio)".
Signal (necessary information): The subtle swaying of the line, changes in the tide, and the shadow of a squid following you.
Noise (unwanted interference): Glare on the sea surface, reflected sunlight.
Fishing with the naked eye is like trying to hear a faint radio voice (the presence of a squid) amidst loud static (noise). No matter how good your eyesight is, your brain cannot process information when it is covered in noise. Only by passing through a lens with over 99% polarization can the noise disappear and the squid's form emerge clearly as a "signal".
● Cheap lenses "destroy your brain"
"You can see into the water even with 2,000-yen polarized glasses, right?" You certainly can. But there is a fatal trap there. "Lens distortion." Cheap plastic lenses have low molding precision, and the field of view is slightly distorted. What happens if you keep wearing these for a long time? Your brain keeps working at full capacity to try and compensate for the image distortion, resulting in severe "eye strain" and "decreased concentration."
Half the reason you think "my head hurts... I want to go home..." in the evening is because of this. There is no way you can detect the delicate bite of a squid when your concentration is gone. Lenses with guaranteed optical performance like "TALEX" are not just expensive. You are buying a physically correct "clear field of view" that won't tire you out even if you wear them all day long.
● Tune information with "color"
Furthermore, by choosing lens colors (wavelengths) according to the situation, your eyes will evolve to be "squid-specific."
[The absolute king of dawn/dusk] Ease Green It looks surprisingly bright even during the dim hours of morning and evening (low light). It has high visible light transmittance (approx. 40%), making the squid's shadow stand out in black even in situations where there is not enough light. If you want to master the dawn/dusk period, this is the only choice.
[The ultimate solution for eging] Luster Orange Strong against cloudy weather and murky water. It has high contrast performance, making the outline of the egi and the movement of the line appear clearly and three-dimensionally. If you want to grasp the distance to "visible squid," this color is physically the best.
...is what I would like to say, but the world of polarized glasses is much deeper. The lifespan of the lens, the shape of the frame, the difference in refractive index between glass and plastic... if I start talking about these, the sun will set.
If you are serious about wanting to "see through the sea," read the articles on this blog. It covers the "serious 21" that professionals use in the field, and how to choose them so you never fail. Before you buy cheap stuff and regret it, arm yourself with knowledge first.
👉 [2026 Latest Edition] 21 Best Polarized Sunglasses for Fishing! How to choose the one pair that pros reveal will "genuinely change your catch"
👉[TALEX Complete Guide] Full explanation of fishing lens colors. The "first pair" and the best combinations by situation that pros swear by
3. [Mechanical engineering of capture] Net or gaff? Landing chosen by "fluid resistance"
Finally, a talk about "landing tools" to reliably bring in the squid you've hooked. "A net is fine, right? You can scoop fish too." If you think that, you are underestimating the physical energy of the "jet propulsion" unique to large squid.
The reason I strongly recommend a "gaff" for eging is not just because it is portable. It is because the "hydrodynamic resistance (drag)" is overwhelmingly smaller.
● A landing net is a giant "underwater parachute"
Let's say you've hooked a 3kg giant squid. Imagine that the moment you bring it to the tetrapods at your feet, the squid uses its last bit of strength to jet away. What happens if your landing net is in the water at this moment? Each mesh of the net catches the water flow, creating massive "fluid resistance (drag)". This is even more true in places with fast tidal currents. Even if you try to move the net thinking "I want to scoop it!", the water resistance makes it move as if in slow motion. I have seen countless tragedies where the hook comes loose during that split-second lag, and it's goodbye...
● A gaff controls with a "point"
How about a gaff in contrast? It just has a hook at the tip. Underwater resistance is almost zero. You can instantly reach the coordinates you are aiming for as a "point". Even if it runs away with a squid jet, you can cut through the water flow and follow it. This "physical difference in operating speed" is the factor that dramatically lowers the rate of losing your catch.
In particular, the Daiichi Seiko "Auto King Gaff" designed specifically for eging is a masterpiece in terms of mechanical engineering as well. It is a compact cylinder when stored, but the moment you swing it out, the hook pops out like a "solenoid (electromagnetic valve)" and opens automatically. This mobility, which can be handled with one hand, can be called "part of the arm" for eging anglers who run and gun on rocky shores or tetrapod areas with poor footing.
[Conclusion] You can entrust your "final move" to these two
1. [Supreme Masterpiece] Daiichi Seiko "Auto King Gaff CS300 / 500"
If you buy this, you won't need to replace it for the next 10 years. The hook storage gimmick, strength, and smoothness of the swing-out are all perfect. Expensive? Considering the priceless 3kg squid you lost, it's cheap, right?
2. [All-in-one Ready for Action] Prox "All-in-One Mini/Salt SE"
For the lost lambs who say "Gaffs are scary so I prefer a landing net, but I don't know what to get," this is the only choice. In addition to the shaft, frame, and net, it comes with the "landing net joint (folding mechanism)" and "landing net holder" essential for running and gunning, all set from the start. There are zero physical troubles (compatibility errors) like "the screw diameter doesn't match" or "I forgot to buy the joint and can't carry it on my back" that occur when buying things separately. The moment it arrives, you can hang it on your waist and go fishing. Start with this first.
4. [Biomechanics of Survival] Life jackets are "waist-worn" only
Finally, a word about the "life jacket" that protects your life. To those who say "It's hot and annoying so I won't wear it," I won't say anything bad, just quit fishing right now. The probability of a person who falls into the sea and panics being able to swim while wearing clothes is close to zero. This is not a threat, but a statistical fact.
However, the reason I recommend a life jacket here is not just for safety. "To maximize physical function for increasing catch results", the "waist-worn type" is physically the strongest choice for current eging.
● Free your "shoulders". The quality of your jerking changes
Some people use the old-fashioned vest type (with foam material), but in eging, the disadvantages are too big. Because the vest type has thickness around the shoulders, it inevitably causes "friction" and "limitation of range of motion" during the action of jerking the rod vigorously. If this continues for several hours, it accumulates as stiff shoulders and fatigue, draining your concentration for the evening prime time.
How about the "waist-worn type (inflatable)" in contrast? The upper body is completely free. Since nothing interferes with the shoulder area, you can swing the rod with the same feeling as if you were throwing in just a T-shirt. Furthermore, by having the heavy cylinder and air chamber at the waist position, the "center of gravity" is lowered. If the center of gravity is physically lowered, your core will be stable even on rocky shores or tetrapods with poor footing, and the accuracy of your casting and landing will increase.
● Consider anything other than the "Sakura Mark (Type-A)" as trash
Cheap life jackets sold on Amazon for around 3,000 yen. Those aren't tools you entrust your life to. They're just "peace-of-mind trinkets." There is only one criterion for choosing: whether it has the Ministry of Land, Infrastructure, Transport and Tourism type approval, commonly known as "Sakura Mark (Type-A)". Without this, it is not legally recognized for use in boat fishing (offshore), and above all, it has not passed the performance test of "whether it inflates correctly when you fall into the water."
If you're going to skimp on a few thousand yen and strap garbage to your waist that won't inflate when you need it, you should have bought an expensive one from the start. Your life is worth more than a measly 20,000 yen, right?
[Recommended Gear] Buy life and comfort with money
1. [The Classic] Daiwa / Shimano "Waist-worn Automatic Inflatable (Type-A)"
In the end, products from major manufacturers are the most reliable. Replacement cylinder kits are available everywhere, too. The design is sleek, so it doesn't look lame even when worn around the waist. If you're unsure, you can't go wrong with either of these two companies.
2. [The King of Cost-Performance] Bluestorm (Takashina Life Preservers) If you think "Daiwa and Shimano are too expensive," then this is the one. They are actually the OEM manufacturer that makes life jackets for major brands. In other words, the contents are the same, but the price is lower. If you don't care about the brand logo, this is physically the smartest choice.
Summary: Gear isn't a "supporting role." It's a part of your body
I've talked at length, but the conclusion is simple.
Snaps: The "joints" that determine the action of the egi.
Polarized glasses: The "eyes" that gain information from underwater.
Gaff: The "claws" for securing your catch.
Life jacket: The "armor" that maintains your performance.
These are by no means "supporting roles." Just like rods and reels, they are essential components (parts) for the physical calculation process of "catching squid." If there is even one cheap item (bottleneck) anywhere, the output called catch will leak out from there.
"Ah, if only I had used a good snap back then..."
"If I had polarized glasses, I could have seen that squid..."
Stop shouting those excuses at the ocean starting today. Only when you have gathered gear to a level where you don't make excuses for it will your "skill" finally be tested.
Come on, check your tackle box right now. If there's a 100-yen cheap snap in there... you know what that means, right?
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"What kind of egi should I throw next?" "Where should I target this season?"
When you're lost at the fishing spot, what you can rely on isn't your intuition. It's solid "logic."
The following article is an eging "dictionary" that condenses all of my know-how into 5 chapters and 21 articles. Whenever you are in trouble, come back here. The answer is definitely here.
▼ [Complete Coverage] Eging Strategy Complete Guide | Summary of all 21 chapters
Frequently Asked Questions (FAQ)
For those of you who are argumentative, I will crush the frequently asked questions at the end.
Q1. Is it not okay to use cheap polarized glasses that cost about 2,000 yen?
Conclusion: It is not okay. I'm telling you for your own good, throw them away.
Cheap lenses often have poor molding precision, and the field of view is subtly distorted. If you wear these for a long time, your brain will try to compensate for the distortion on its own, leading to exhaustion and causing intense eye strain and headaches. It's not about "just being able to see"; it's about "not tiring out your brain." Think of using optically correct lenses like Talex as a physical investment to maintain your concentration.
Q2. Isn't it difficult to hook a squid with a gaff? Isn't a landing net more reliable?
Conclusion: Once you get used to it, a gaff is overwhelmingly faster.
It might be scary at first, but the risk of losing the squid while fumbling with a landing net due to water resistance is physically much higher. A gaff has zero water resistance and can approach the target point (the squid) in a straight line. The trick is just to "insert the gaff under the squid and pull it up lightly straight up." If you use a short gaff specifically for eging, anyone can become a sniper after practicing a few times.
Q3. When should I replace my snap?
Conclusion: Every fishing trip, or "immediately after catching a big squid."
Throw away the stinginess of reusing them over and over because "they are still usable." Metal fatigue progresses even if you can't see it. A snap that has been subjected to continuous jerking, causing the metal to harden or undergo minute deformation, is a ticking time bomb that will break on the next cast. Snaps only cost a few dozen yen, right? The habit of changing to a new one every time is the cheapest insurance.