Fins: Force vs. Mares Power Planas

[tlspyder13]

I can answer why the vent in the fins. It is to help people not get as tired kicking. People's legs kick up much better and stronger then down. The holes allow less resistance on the down stroke from your tube or toon. I have a pair like macfly55 posted.

Just got a pair of the mares last week and can't wait to see if there is much of a difference.
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