Well I thought I did not have this video(thought it was deleted and I never reviewed it), which is why I never mentioned it before.  I did mount a camera to my bow and shot 6 arrows to record what effects were seen on camera.  Surprisingly there is not much shaking.  I don't know how to slow down youtube videos to one frame at a time but on my laptop I can review each frame.  When I do this there are aprox 5-6 frames that are distorted due to the release of the arrow.  There were some pretty cool shots of the arrow coming off the bow to.  The camera settled down enough to see the shot placement.  I was shooting at 7-8 yards.  I think that if I build a more study mount that it should work out, but your thoughts are welcome.

And here is the video
http://www.youtube.com/watch?v=HFTF5s4A900

I have one of these on order.  http://pointofviewcameras.com/vholdr-contour-hd-camera.html

I will be wearing it on a modified head lamp strap. It has built in image stabalization as well. Below is a clip my mate filmed doing an enduro ride. The footage gets a bit dusty due to other bikes in front but you get the idea. Not hunting but a good test of the camera.

http://www.youtube.com/watch?v=a6co18pRIi0

With the gopros you can mount on a helmet or modified headlamp strap from my ski experience. As far as mounting on the weapon I did on a .22 for a coyote hunt and while that did not shake too bad a buddy of mine did on his 22-250 and it just about destroyed his camera from the shake. How do you draw your bow would you end up with the camera off the animal during that part of the hunt?

Do it all the time a good tree mounted camera arm is a must Gorilla has a decent one at a great price