Would like to know any tips on doing this. We want the actor to be running with a close-up shot on the face but the effect of background shaking instead of the actor's face. Should the actor be holding the camera??
if you can't get a body brace to mount it to, then yes, the DIY approach would be to put it on a lightweight shoulder mount rig (like a spiderbrace) and have the actor hold it backwards, rigidly pointed at himself. i did this in this video, not running, but same idea.