Anyone who has grown accustomed to the use of these very useful gadgets, feels completely helpless when it enters the water without them. Even though it has a good swimming pool style, it will seem that your feet move in vain and that its progress must be performed mainly by dint of arms. In diver footwear with fins, on the other hand, the situation is radically reversed: progress occurs only due to the movements of the feet.
In the beginnings of underwater fishing, the fins were broad and held to the ankle with a strap. They were also deprived of Central and lateral ribbing. Today day, after detailed studies and experiences, have come to confeccionas types of fins that constitute a true anatomic extension of the leg.
For the practice of the spearfishing are not recommended nor excessively long (around the 70-75 cm, finding ourselves up to90 cm, depending on the type of fishing that we practice), or too hard, because its use fatigue to the diver, and considerably reduces the apnoea. The ideal flap is that propels without fatigue but effectively. Yet as general rule will use:
Hard Palas in the deep-sea fishing and fishing to the foam, since in these two types of fisheries need a plus in reactivity by depth and current.
The average hardness are the most versatile of all both for normal fishing, fishing to foam or fishing in middle-distance.
The soft blade will be an ideal choice for a soft catch or endurance in which does not require a great demand.
Even with all this depends on as not our body composition and weight to assess whether they are balanced, too hard or too soft.
Based purely on manufacturing materials, we can make 2 big distinctions: the most used are the thermoplastic and carbon fibre.
Termoplasticas: offer great elasticity, being able to choose several types of hardness depending on the type of fishing you are going to perform. They are very resistant to bumps and scratches. More expensive than the rest.
Carbon fiber: this material offers a high-performance relationship effort/propulsion. It is a much more reactive material force which we apply with the leg, obtaining a 25% to 30% more reaction. Against we have to their fragility and their prices are much higher in comparison with the thermoplastic. You have to be careful with them. And as we did not find fins with interchangeable blades, i.e., we can choose the flap, and with the same hardness footpocket to adapt several blades of different hardness according to the technique of fishing practice.
Fins which fulfil these conditions and that suit our type of fishing, will benefit the most kinetic energy provided by the movement in both legs from the hip scissors, because, indeed, care must be taken that the legs remain extended in its entirety, only slightly flexing the knee.
It is necessary to note also that the role of the fins is different in surface than underneath. In this second case, fin constitutes a point of support rather than an element of propulsion. Since in spearfishing, fins, except for brief moments of the dive after a dam, should be designed essentially to make journeys in surface and not to propel the hour descent, since our time of apnea would reduce drastically.
In short, we will say that fins, to be perfect, must meet the following three attributes:
- The plane of the fin should extend leg and not the foot shaft.
- You must have very marked side ribbing that confer him some stiffness and serve to channel the water propelled.
- The surface of actual flap must possess fine ribbing.