Windsurfing at 3rd Ave, San Francisco, CA, USA on two windy (4.7-4.0) summer days. The SF Bay almost as good as it gets. Unfortunately, my right foot was still recovering from a 4-stitches-cut, hence the Donald-Duck-booties, and less than stellar performance. But, boy did we have fun, and that's all that matters, ya?! Since it's hard to get a camera out a mile or two from shore (unless you have a helicopter), these GoPro Cams are ideal.