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Originally Posted by BentFishBoy  Todd has it there, they seem reasonably safe (as much as any other fin). |
Probably more so than fiber fins that only have rubber on the edges, 'encased' in rubber is the key. Should the fin break the rubber might still protect against sharp edges. The main issue I see in fiber fins of any form is that the side to side flexibility is not enough. Sure you can go from heel to toe and get it to bend, but when someone slices through and whacks you one, you know you got whacked since there is very little flex that direction.
As far as what I would accept, that's not really an issue. The rules state about 'approved fins', is there a list of what is approved or at least what isn't. I know there are hundreds of fins out there so the list could be long, but some definition as to what is approved could go a long way.