Of course, you cannot hold a bow perfectly still either. But with a bow it's different--even counterintuitive and a little mysterious. With a bow, you should go ahead and let the sight's pin float around in the vicinity of the bull's-eye and not worry about it one bit as you slowly squeeze the trigger. As I say in this tip, you wouldn't think that would tighten your groups. But, like magic, it does. At least, it does for me and for a lot of shooters better than I am. Try it.