[bioengine]

Hogan Secret,
It's called 6-M-1.
Hogan started his down swing from the ground up.
He has Physics , conservation of momentum and knew how to load and fire his muscles.He may not of consciously knew he did. Although naturally and subconsciously he did.
Hogan also knew how to move the club around the axis of his spine.

Two things which power the golf swing, conservation of momentum and loading and firing the muscles in the right order. This is physics.
Geometry can't teach you create these two factors. This is why no one can copy hogan.
You have to train your body how to load and fire your muscles and create conservation of momentum.