Is this the movie I'm thinking of?
Probably about twenty years ago, I remember watching a movie on TV about Bigfoot. I can't remember the title, but here are some things that I believe were in the movie:
1. It was done in a documentary style, and appeared to have been made in the 70's.
2. There is a scene where a group of people set up a series of tripwires and other gadgets on trees in a forest to detect a Bigfoot coming near them.
3. There was a re-enactment of a group of hunters who set up camp on or near Mt. St. Helens (could be wrong about the location) and had several Sasquatch throw huge rocks at their cabin. (This may not have been in the movie, but may be from a book I read as a child.)
4. A re-enactment of some hunters at a lake or river who somehow angered a Bigfoot and later found one of the other hunters dead with a broken neck. (Pretty sure that was in the movie.)
After searching around, I learned the movie may be The Legend of Boggy Creek. If anyone could confirm this, or give me the title of another movie I may have seen, I would really appreciate it.