The GoPro HD camera has a variety of different mounts available. Most people have been using the suction cup mount for boat videos. Brad (honey/blue 22) even took some with the camera suction mounted on the outside of the hull side just below the rubrail. They really stay put.

I also bought the "handlebar" mount. That is what was used for this. I mounted a short grab bar along the section behind the back seat, in front of the engine hatch. My experience in a 16 has been that it is very desirable to have a grab rail for each hand.

They have all kinds of adapters to let you be creative in the direction the camera aims.

The only down side to the bar mount, is the gear whine that is transmitted up through the hull. I haven't noticed that with videos others have shot using the suction mount.