loco_cacahuate has it right. Get a two point anchor. Also, for me it works best if I hold using back tension for a good 2 seconds before I release. In order to get a 2 point anchor, you may have to switch to 3 under, which helped me alot anyway. I use Rick Welches style of shooting and it works well for me. I have a double anchor. I hold, and settle into the shot while maintaining back tension. When I started shooting this way, I was amazed at how much better I could shoot.