I have been playing with the vertical pistol jumps and they are a riot. I haven't read Coach Sommers reccomendations just kind of got into because of the benefit for Allen. Some of the guys were talking about a KB guy and how he could do jumping pistols onto a box with 2 KB's and I thought well that is pretty cool.
I think if you start doing them you will find it is pretty easy to tell how you are progressing. I started jumping unto a box about 12 inches and now I am up to a 20 inch box.
What we think, or what we know, or what we believe, is in the end, of little consequence. The only thing of consequence is what we do. -John Ruskin