I watched quite a few instructional videos and a few clear wrong things stand out, just watched Bert Kinisters volume 60 The 100.00 Video. He shows some tricks to avoid a double hit. He is wrong in the close shots where he deliberately miscues. First, a deliberate miscue is a foul. Second, during those miscues he hits the cueball with his ferrule, foul part two. In that video he said that all the refs that called a foul on him were wrong, they were not. It was the right call, hitting the cue ball with the ferrule is a foul. It was not a double hit foul, but it was a foul. I have learned a lot from Bert's videos but don't listen to this part.
Steve Mizerak, HOF, a million tournament wins, etc... got the 9 ball break wrong a lot. In his instructional video he stated "if you make a ball you crossed a finger, if you made two, you crossed two fingers". In a match he commentated he said that "see the 9 ball not move, that means the rack was not tight". We know that is exactly the opposite, and a lot of players aim to make a ball on the break. Even outside of the "modern" era of magic racks and perfect cloth and tables, if you watch the Earl vs Efren Hong Kong Challenge match, they were both aiming the 1 in the side.
Steve Mizerak, HOF, a million tournament wins, etc... got the 9 ball break wrong a lot. In his instructional video he stated "if you make a ball you crossed a finger, if you made two, you crossed two fingers". In a match he commentated he said that "see the 9 ball not move, that means the rack was not tight". We know that is exactly the opposite, and a lot of players aim to make a ball on the break. Even outside of the "modern" era of magic racks and perfect cloth and tables, if you watch the Earl vs Efren Hong Kong Challenge match, they were both aiming the 1 in the side.