tongzilla said:
The concept of acceleration of any body components (e.g. the hips) all the way to finish is flawed.
The knees, hips and shoulders all slow down after Start Down. The momentum of the club carries you to the finish.
The body components indeed do not accelerate all the way to finish, but that doesn't invalidate my previous post.
The knees, hips and shoulders should be accelerating into impact and one should try to keep this acceleration beyond impact. As I said, Hogan and TW demonstrate my point.
Trevino indeed is closer to the type of post impact motion Gregg demonstrates, but keep in mind Trevino has a figure 8 swing. He is going outward post impact whereas Hogan and TW are doing just the opposite.
I.e., their arc goes inward post impact, although the arms feel like they are going down the line. The faster, the better, at least on full shots.
Having said that, I prefer Hogan's swing end better than TW's. I prefer acceleration post impact right up to almost the end and then a braking action to reduce strain on the back. Hogan does this, TW's does not (except on his stinger shots).