I will only dive your fins Bob.
They get my tired Bones where they need to go in comfort.
They get my tired Bones where they need to go in comfort.
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I can pretty well guarantee that they will have to do frog kicks well, to be DIR "allowed". All DIR divers in a team, have to have nearly identical equipment--they all need to be intimately familiar with the gear of their buddy--as much as their own. In deep ocean diving, when i would dive with George Irvine, Bill Mee and Jarrod, I could have a pass to wear freedive fins, but if we were to do a cave dive, I would absolutely be in Jet fins. If you watch some of the underwater footage of the power caves they do--like the free download of DIRIII you can watch, ( the big underwater cave video portion is toward the end of the video, after George finishes explaining the gear issues....you will see the inside of a huge aquifer, in some places thousands of feet wide, in some places, so narrow it is tight for divers to squeeze through. Viz is over 300 feet, unless someone kicks up silt..as they are 280 feet down, and well over a mile in ( thier record was over 3 miles in) silting up the cave could be a very life threatening problem--one that is prevented by avoiding the personal preference crowd of gear choosers, and mandating perfect skills ( including frogkick).I hope your not saying that FF aren't DIR compliant? I have it from a senior guy at DIR/GUE that they are.
I think you are missing a 3rd major group
3. Competitive Swimmers- as the kick technique and stroke used in Force Fins so closely matches that of a swimmer without fins, a well trained swimmer loves them.