For my birthday, my son gave me an extreme sports helmet cam recording device - waterproof to 3m! It's an "ATC-2000 Action Cam from Oregon Scientific. Attached it to my tug and got the results shown in some of the videos. The original quality is better than that you see on You Tube - it has a 2Gb card which gives 1 hr of recording at 640x480 at 30 frames/sec (quality I used). Longer durations are possible at lower resolution and lower frame rates. The picture of it on a helmet gives an idea of size, it is just over 4 inches long and weighs around half a pound.