Yup, I'm doing it every trip out. Bought the Creative VadoHD, 2hr 720p, 8GB camera ($139) and a mounting tripod ($30) from Amazon, search SuperClamp. Works great.
The camera was a special purchase via "Field&Stream" which included accessories: extra battery, chargers, covers, etc.
Here's and example (hand held not mounted):
BigFish Larry bait fishing video by PRBuzz - Photobucket
I've gotten so I can record 10's min to hours then just edit into short clips for posting. You are also able to take bunches of short clips and merge into a long video.