My friend Danny invented the sport of Kite Tubing, a sport similar to Kiteboarding but a little slower, and I was involved in the first edition. It is quite simple (and it might have been done before): Step one: Find an inner tube to float on. Step two: fly a kite and pull yourself around. Its a lot like sailing on a boat with no control. I think it might be a nerd/hick cooperative activity, because it takes a nerd to get the kite and a hick to get the inner tube. In this case, Danny provided both. Of course, I flew a camera to see how it looks from above. The other photos were taken by Danny on his phone.
We floated across Greenlake three times and it was a blast. I recommend this to anyone, but the trouble is, you need a good way of launching the kite without getting it all wet. Probably the best way is to have a fishing pole.