I agree GoPro is the way to go, you will be wasting your money if you buy another brand waterproof camera. (I have heard Apple is coming out with a comparable product next year poss.) I have a GoPro 4 Silver model, if you need specific info on that one or software let me know..I am usually quick to recommend alternatives as I don't buy into the hype surrounding a lot of products but in this case shop around, check pawn shops, facebook sales sites, and craigslist and find a GoPro. Even the earlier models set the standard for sports camcorders and all the parts and accessories out there are made to fit them. If you can buy new, go for it.
I bought a cheaper camera from an importer. Worked just fine and was very waterproof until the day it quit. Liked it better than a go pro because you could mark five minute segments that you wanted to save. The rest would be written over so you never had the dreaded memory full notice. Bought a different model from the same importer and it lacks that feature. Next one will probably be a go pro. The import spends most of its time on my dash recording dumb### drivers...snowcamp, bought a Go-Pro type camera sometime back send him a PM to see how he likes it and get details. I use a cheap Kodak waterproof that works OK