GoPro and all its mounts is nice...but I HATE the fogging...it is a big hassle and problem.
The Contour doesn't have that. And specially using this back mount, you need a cam that does not fog, since you cannot reach the on/off buttons etc.
Rain-X Antifog, inside the plastic case lens, and on the camera's glass lens. Let it dry for half an hour, polish with a soft, fluffy towel. Takes a little work to get it streak-free, but the payoff is no strips, no case-sealing rituals, like the refrigerator or car A/C. Change a memory card on the beach with zero problems. Since I did that, I have never had my camera fog up on me.
Regular Rain-X works great on the outside of the case to make the water drops that blur the shot slide off easier. And on the inside and outside of your sunglasses for the same reason.