I'm trying to figure out how to use the diamonds on the end rail to calculate kicking to a certain point on the long rail (most likely to a ball frozen to the long rail). Kicking a ball sitting in the jaws of a corner pocket such that it goes to the far end rail and back to the other corner pocket is easy enough (i.e., aiming for the middle diamond on the opposite end rail, splitting the distance). How is the calculation done, however, if instead of trying to kick into the corner pocket, you are instead trying to kick to the first diamond up from the corner pocket or to some other diamond or specific point on the long rail. I'm thinking it's probably pretty obvious but I can't quite get my head around it. Any help would be appreciated. Thanks.