A friend of mine just bought a Kitehero line mount and Go Pro surf hero. He's a keen snorkeler as well as a kiter. Sat in the shop waiting for wind we devised a super simple upgrade for a hand help camera mount. http://www.stormkiteboarding.com
1: Chop (Saw) the handle off and old pump right at the base so you keep the flitch (triangle fin that protrudes from the handle for strength). You'll notice the handle has a hole in it's core. Take a screw less that 2 inches and fix your new handle using the hole in the line mount.
2: For additional safety take a wrist lease off a trainer kite or a very old kite (pre 2004) add a length of bridal (rope) attached to the camera leash and you've got a pretty safe set up, so you don't lose your new toy.Tools required:
2 inch screw
30 minutesParts Required:
12 inch of rope/string/line/bridal
Velcro wrist leash