I have a guy on my team that thinks I am full of crap about "the spot on the wall" thing, even after explaining every 3C player in the world uses it. He watched a pool video where the guy touched on the diamond system and said that I only need to use spot on the wall because I do not understand the diamond system. He went on to explain to me that every table will have the same target area for a 3 rail shot because the diamond system is laid out with the same dimensions on all tables. I tried to explain that all tables play slightly different than one another, especially between different brands but he insists that I just need to watch his video and learn the diamond system.