Hey,

Target has a neat 35mm underwater camera that looks nice for windsurfing use.  I just bought one for the upcoming Hatteras trip.

It's called the Mariner from Vivitar and it's only $20.00.  Comes with a battery (for flash) and a roll of film too.  It's cheaper over the long haul than a waterproof one-time use camera.  If you’re interested, check it out at

http://www.vivitar.com/Products/FFCams/focfree.html#Mariner

Bill