RE: shooting against the wall
Shooting from the middle of the valley was the "norm" on most two wheeled compounds some years ago. That is why clickers used to be so popular, there really was no defined "wall" on the older two wheelers, therefore to become repeatably consistent, you had to find a good point in the middle of the valley that was much more repeatable than the mushy back wall that also came up from peak let-off and added more holding weight to the mix on top of that mushy wall. The old two wheelers were notoriously difficult to find a repeatable spot with without a clicker or other means of determining your exact draw every time.
Nowadays, we just hog 'em back to a nice, solid wall, and let fly. Very repeatable. I think this is what Larry was talking about. Good shooting, Pinwheel 12