the WASPcam is a great option for watersports and kite boarding
if you do experience fogging, there are anti-fog strips included in camera package (slide in between camera and waterproof casing)
waterproof down to 196 feet. two models also include wireless wrist remotes, so you can control camera right from your wrist. remotes are also waterproof.
best part is they offer similar picture quality as gopro, but for much less $
learn more: http://waspcam.com/