Hi, I use the metal loop. I use the one where the nocking point is a the top of the device. I use a ball bearing type release. I have had no problems. It does not cut my string or show any unusual wear. It doesn't hit anything and my bow shoots quiet. I can pull my bow to full draw and let it down and my arrow stays fully nocked. The only way to know if it will work on YOUR set up is to try it. Good luck and have fun.