I'm like Tom Knapp. I don't worry about it. I can shoot just about any gun that is within reason as far as LOP is concerned. In fact, the thing that is more important to me is that I mount and hold the gun the same every time. Since I have started shooting skeet, I try to do this. I wrap my fingers around the front of the forearm in order to keep the gun against my shoulder when I shoot. And in order to mount the gun the same every time, I just touch my nose with my thumb when I mount the gun. This way I have the same sight picture every time.