Well I am not an expert by far, however the way I was taught was your free had to not be on the gun at all, I lay it on the bench under my gun. The reason for this Is to have as little of yourself because of your heartbeat or any flinching could somewhat throw off your aim however much. I find however if you are in a comfortable position that you will shoot far better than if you are not comfortable. I like to make my blind as comfortable to shoot out of for that reason ie I have built rest and different things to help me out. So that probably don't help you much but any advice i would give is just make sure you are comfortable with your style no matter what someone else says.