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How on earth could it trap the line???countryboy:** am not a cave diver **
but, from research, the split fins can trap the line.. an entanglement hazard.
Meng_Tze:No entanglement issue (at least no more than any other fin), just VERY inefficient when it comes to frog, backward kicks. Once you go frog, you wont go back (at least I didnt). I frog all over the world, shallow, deep, open ocean, cave, wreck.......
rockjock3:New diver with only 38 dives and 2 months since OW cert. Don't have any problem doing frog kick with SP split fins, or going backwards, or doing helo turns. I still fin easier, but go faster than most of my buddies with minimal finning.