Left hand rotation through the impact zone

[EdZ]

I've always wondered if that graphic is intented to convey putting overspin on the basketball?

Jeff - unless you have perfect, on plane, alignments, I would say yes, for most people there needs to be an active 'action' at release point.

That lead forearm rotation is the single most important, and missing, part of the majority of high handicap motions. While a proper hinge action is the next step, I think most good players got there by first learning to roll the lead forearm with intent (learning to hook), and then backing off to learn a proper hinge.

If you look at someone like J. Miller, he had to roll, and roll hard from top. So did Hogan.