The most important thing to understand when training athletes is the difference between G.P.P and S.P.P. Also, it's important to understand that mastery in a specific discipline does not mean mastery in weight training. In fact, it is usually the opposite; master of one thing, beginner of another. This is very lucky for you, whether you are a coach or an athlete. What this means is that you don't need advanced or fancy training methods to achieve results. Besides the huge pile of dung that is "sport specific training", the misunderstanding of training mastery by elite athletes is ruining training.
This is a classic case of an idea that works beautifully in theory but, at least in many cases, fails to pay off in the real world. The theory behind rack pulls is that they allow you to use more weight than you normally can handle in conventional deadlifts, which helps target certain sticking points, namely the lockout position—a real sore spot for many lifters. Sounds good, huh?
What is the worst thing you see people doing? Keep it fitness related. Novice lifters listening to novice lifters on message boards – it’s like two Navy recruits running a nuclear submarine. Nothing good can happen.