The first thing you should do is solve the problem of the arrow popping off the string. That SHOULD NOT BE HAPPENING. You're doing something wrong or have a piece of mismatched equipment or something. There's really no way that should or can happen if you're set up correctly, PERIOD. If it happens in practice it's bound to happen with the buck of your dreams standing in front of you. Fix the problem, loop, new release...whatever it takes. It shouldn't be like that.