Balls....he has them

[Amber Lamps]

I think that I would still get a camera mount and just leave it slightly loose so you can move it around.

Ram mounts sells a unit that mounts on the bars or on the tank. You can get to of the longer arms and a double ball connector to make it about an 18'' reach and quadruple articulating.

What's go about this is that you can adjust it on the fly pretty easily and you can let go of your camera without fear. Obviously, this is just an example. Ram sells different length arms and different mounts, etc.

If you invest in the remote cable as well, you could get some really good shots without compromising your or your friend's safety.