[BerntR]

Understanding hinge action and how it relates to ball compression, spin, trajectory was a huge eye opener to me when I started to read the yellow book.

It literally changed the way I wanted to strike the ball. It set my impact thinking straight in a way that made long lasting improvements.

When the touch goes away and the stroke falls apart you start thinking about what you're doing and what you're supposed to do. If your stroke is accompanied by faulty beliefs the thinking can make things worse. If you really understand impact you can manufacture shots that works.

Hinge action is certainly one of the topics that differentiates TGM from the pack. And vital if you want to become a shot maker who knows what he's doing.

My two cents.