cord wrapping around leg

I finally went surfing last weekend with some mates from Best Kiteboarding, we still had to drive to Melbourne to get some stomach high waves...yep that's Florida:(

Anyway I hate wearing a leash for the simple reason that it is annoying, gets around the feet,etc... So here is an gadget from XM : the Tangle Free, a double swivel leash that helps avoid this problem.

There is a slider (small weight) that moves on the cord, it pulls the cord down which decrease the chances to step on it.