Wind and Unwind

How big of a back swing will I do? How do I know when enough is enough?

One thing, as far as the back swing for old farts, there is no "enough" back swing. Go as much as you can. But what should you achieve for? I would say that when the right hand brings the club up, it should try to bring the club aligned with the plane. The shoulders should then wind up as much as possible - the club along the plane and the shoulders wrapping around the spine. The down swing should just feel like unwinding the shoulders. This should be automatic with no conscious steering - one way or the other.

How do we execute this wind and unwind technique? Well, one you have set up, where the club is left flat on the ground, the arms falling down straight to the grip, almost forming an "L", the right hand in control and dot on the muscle of the right hand is felt - then it is just a matter of looking at the plane and winding the shoulders parallel to it. This motion will bring the club along the plane automatically. Wind of the shoulders continues up to the desirec tautness.

The next is up to you. By the way, this is an extreme implementation of Hogan's plane.