Ben was right, of course. You never "release," i.e. "let go" of the club, until after the swing. You actually
release your Accumulators or Power Generating ANGLES:
1. The Bent Right Arm.
2. The Cocked Left Wrist
3. The Turned Left Hand.
4. The Across the Chest Left Arm
But, I know what you were asking...
"When does the clubface start closing and my arms cross-over?"
In TGM-land and MANZELLA MATRIX land, we call this the "Finish Swivel." This is as opposed to a "swivel" that would get the club
to impact.
"So...Ok...It is called the "Finish Swivel." When should I do it? And, when and how much should the clubface close past impact?"
The clubface opens—relative to the plane—about 90° on an orthodox backswing. So, on the downswing, on the way to separtation, the clubface needs to close 90° for straightaway ball-flight.
Ideally, totally left alone to its on devices, the clubhead would close about 90° more
past the ball by the time of the "Finish Swivel." This occurs approximately when the shaft reaches vertical for the first time after impact.
"What does, 'The shaft reaches vertical for the first time after impact,' mean?"
Here is an example:
This position is illustrative for a couple of other reasons as well. It helps us ask—and answer—a couple of key questions.
1. Are you supposed to keep you left wrist flat, or arched like in this picture, all the way to the Finish Swivel?
You can. But you certainly don't have to. Or in some patterns—don't even want to.
If you are prone to slice. This position is your ticket out of hackerdom. Learn it and then you can relax it if you wish.
In a normal, orthodox TRUE SWING, the right wrist would straighten long before this point, and the left wrist would bend.
2. When does the clubface "turn over" past impact?
It never stops closing from the top. So, past impact, it keeps closing, until when the golfer is in the location of the swing that is represented in the photo.
3. Doesn't something different happen past the ball called "hinge action" before the swivel?
Like I say and illustrate in "Never Slice Again 2.0," the folks who think they can actually DO this—close the face from the top to a point, and then change that rotation form impact to floow-throug—or release point to follow-through—are pmost likely just thinking they can.
If that helps them, or anyone else, then I think they should do it.
"So, what are you exactly saying I should do, specifically?"
You should learn to "double-trap" the ball. Trap it ONE WAY by leaning the shaft forward at impact, and the SECOND WAY by continually CLOSING the face through impact.
This will probably have to be done on purpose, by "hand-manipulation," and then, eventually, just "naturally."
If you are having trouble closing it, make sure your LEFT ELBOW is rotating as well.