Imagine having something you can place on the table that points to where the CB contact patch, where the CB touches the table, needs to be to make the OB go where ever you want, say center pocket.
Babe Cranfield's the Aiming Arrow.
And imagine all the time you spend placing it before shooting. Imagine all the time you spend making sure it's in the right spot. Imagine moving it around the table.
Imagine that you can't use it when you actually play.
Now imagine a method that you can use the same in practice as in play. Can you picture it?