OK, glad to hear we're on the same page.I completely understand your though process, but what I think you aren't taking into consideration in the first diagram is table speed. I actually tried to do something very similar to what you drew out, but there was no way that I could get to where your cue ball comes to rest without the cue ball hitting 2 rails. If I would have hit it so soft that the cue ball would have stopped where it did in your diagram, the 13 ball might not have made it into the pocket (it would have had to been a really light hit). My only option was to go two rails and come back out to that spot. I almost hit it perfect speed, but you will notice that I barely caught the 11 coming off the other rail. At that point I had to adjust my plan.
pj
chgo