I've been experimenting with using the GPS program on my iPhone (motionX gps) during OW training swims. I find it interesting, as you can see how straight you are swimming (sort of), get your distance and speed, and it plots your completed course out on a google map. More of a novelty than a training aid, I suppose. I have tried two different waterproof cases (otterbox and another one i can't remember), neither of which was user friendly for swimmers. I can't find one small enough to stick in my suit or one with a good enough strap to wrap around my leg. The best system I have found so far is two ziplock bags. Has enyone else experimented with this?
Hopper
SwimVacation
