If I go to the web page for the excellerating fin, it says its your most powerful fin. So, which is it? Is is the snap of the classic design that makes it so good? Or is it the foot pocket design? Is the force fin foot pocket on a stiffer blade style fin better than a normal force fin? Is the advantage to the classic fin less muscle fatigue vs having more speed with the extraforce/excellerating models?
To answer the question I'll try to relate my version of the sales pitch and hopefully answer your questions. To be honest the simple answer is Yes, but I will explain.
Design Points (the way I see it)
1) Upcurved blade- allows the maximum surface area during the power (down) kick to be available when you have the greatest leg strength available, from your quads
2) Foot pocket- allows the use of the quads without hyperextending the calves, which allows you to use all of the strength of the quads without pain or cramping. Matching the muscles a competitive swimmer kicks and is phsyiologically very efficient.
3) Flexible blade- by flexing during the kick creates hydrodynamic lift vice drag. This is why you can use them without the heel straps, as they create very little drag and the "Force" generated by this lift propells the fin forward onto your foot and subsequently pushing your foot/leg/body through the water
3a) the flexible blade, combined with the shape minimizes the surface area on the recovery to reduce the load on the hamstrings, further reducing the incidence of cramping.
4) Blade Materials- the high performance urethanes used have enough "snap" that they return to their shape at the end of your kick, returning the energy that you put into the blade by flexing it and continuing to propell you, most materials, rubber for example, absorb too much of this spring and react too slowly for it to return this stored energy to you. It is this feature of "activating" the flex of the blade that is critical.
5) Finally, by creating lift powered with larger muscle groups, you reduce the strain on the muscles (same load, bigger muscles), which decreases production of lactic acid which in turn makes you more comfortable and increases your endurance, keeping your heartrate and mind calmer, all of which combined helps lower your air consumption, in some cases significantly.
please see
The Truth about Dive Fins
Most of the ForceFin line share all of these traits, but each has been altered to fill specific needs of each individual.
The Prime Line consist of the Original Fin (in
Original,
Pro, and
TanDelta materials) plus the
Foil Force, are the fins for 95% of people. While each of the materials is slightly stiffer to provide for stronger and stronger kickers. Most Scuba Divers find they prefer the
Pro Force Fin as it is a nice balance of performance and price. I personnally believe the most noticable difference in the materials is the kick frequency that you use to go a given speed, the higher end materials require a lower kick frequency, I haven't noticed a major difference in how hard you must kick
The Extra Line- The Excellerator and the Extra Force. These are EXTRA everything
The
Extra Force was designed to give maximum thrust and is very large, but works exactly the same as the Prime Fins, but with more power, speed, control, etc... but be warned, they take quite a bit of strength to "activate" the blade.
The
Excellerator- was designed to Excellerate under the quick activation of the blade from a short frog kick while still providing very similar power as the Extra Force. They have "battens" on the back side of the blade to increase the snap of the blade. Also they have a flatter profile balancing the power and recovery kicks, allowing the use of fine control pulses and frog kicking.
To say that the Stiffer fins are Better?? Hmmm... that depends, is a truck better than a Van?? It truly depends, what are you going to use the fins for?
For the average diver the Prime line with the
Original or
Pro Force are a perfect match.
If you find yourself are lacking with the Prime Line because you are constantly in heavy currents or pushing doubles, drysuits, large cameras, or other heavy gear around then the Extra Line maybe a better option.
Trade offs- well I don't think there are many, but you have to choose wisely, matching the fin that you use with the type of diving that you desire. Once you find the fin that works best for you, there are no trade offs, you have everything that you want.
Deco Martini- Did I answer your questions?? please let me know if not, I will try my best to help
Since there are so many fins available in the line and they are hard to test dive, I am hosting a
ForceFin DEMO Day this weekend for all to come and try them. I will be at Lake Rawlings in Virginia October 18th-19th with my collection for people to try and decide for themselves.