I have a almost new pair of paddle pushers for sale. I think they are no longer made. I'm not sure I've ever used them, and am selling my float tube because it isn't being used, either. (Pontoons are AWESOME!) Here's a link if you need clarification.

http://reviews.basspro.com/2010/1532...orRank&dir=asc

They allow you to "walk" in the water, and will move your tube forward instead of backward like your kick fins, but are not as fast as fins. I don't recall exactly the size I have, but they fit my size 9s, although I don't think they'd go much bigger without some modification.

$15 shipped.