This one is a pretty cool video (minus the horrible music) I stumbled on for Warm Spring on the Yampa. It shows someone taking the unconventional far left line through the rapid too.
They are pretty cool and I kind of want one. I know there is a thread on here with a bunch of people claiming they would do everything possible to destroy one if they saw one fly over on the river though...which is sad to me. I think it beats the hell out of the played out go pro POV footage. Its one of the few ways you could actually get some footage of yourself on a raft trip without someone else getting out and doing it for you.