I have bought 4 or 5 gopro cameras and they are very very difficult to work with, and I think it was mostly a waste of time. they also get lost easily if you film in fast moving water.
although I was able to get sellable shots by mounting them on my car, however I get better shots just mounting a tripod to the car, so it is still irrelevant.
if I had to do it over again, I would never have bought a gorpro style camera.