I attached one of my GoPro mounts to a photo superclamp and have gotten some good results. If your interested here's a link for the Superclamp....
http://www.bhphotovideo.com/c/product/371927-REG/Impact_KCP700B26_Super_Clamp_with_Standard.html
I put some heavy duty cloth gaffers tape on the inside jaws of the clamp to protect chrome & paint also to absorb some of the vibrations.
Here's a link for a video of some low angle shots with my GoPro clamped to the forward controls and Passenger peg.
http://www.vimeo.com/4385514
