Yoda addresses this directly in the premium video with Brian Gay. The simple answer is "very" but there is much to gain from understanding the reasons why.
Running out of right arm ruins golf shots! The reddest herring in golf is the straight arms (I call it the Devils Triangle) look of many professionals. Contrast that with impact...HUGE difference. Why only comply with the Geometry of the Circle at impact? Get a head start with early compliance! Check out BG's address alignments, even his adjusted address. With an on plane right forearm (with its mandatory degree of bend at the right elbow) the sweetspot is already on its way UP on plane. I think of it as start-up already having started! A similar benefit can be achieved by hovering the club above the ground at impact height...it feels as though you have already started. Like VJ says there is no "NOW!" in the golf stroke.
Hybrid Mode
