Get multiple GoPros.
I try to do multiple views to make the videos interesting. (no one really want to watch an hour of slowly moving scenery).
For my Mnt bike videos
- Forward facing one - Either handle bar or Helmet. The lower the camera is the better sense of speed you get. On your head... it seems like the world is going slow. handle bar, more normal.
- Rear mounted under seat one. it's cool since you can see your buddies behind you vs videos of someone's backside the entire time.
- Chesty mount. Great perspective view and you can see your arms / handle bar, how you manipulate the bike.
- Down tube Mounted - on a mnt bike, great views of front shock working as you're cruising down some awesome single track.
Buy lots of batteries. They don't last... your mem card will prob out last your battery.