[DOCW3]

Is the left wrist in 10-2-B more turned than 10-2-A or just the left thumb?
Ref: 10-2-A @ V/V/T and 10-2-B @ V/V/A.

Thanks

DRW

Jeff - a very good question, although the thread took an alternate route (perhaps we can get back on topic)

I would suggest that what you think is 10-2-B is perhaps more towards 10-2-A, and that this can require the type of turn/roll you mention.

Per 10-2-B the left thumb and #3 PP are on the 'aft' side of the shaft, for "on plane" impact support. That is a more turned position that the standard training grip you see on many aids would put you in.

See the photo of Homer that Mike O has in in signature, or in the gallery.

To find this position for your left hand, it really is exactly how your left hand hangs naturally at your side. For some that is more turned than for others, but in my case it is at about 45 degrees, not at vertical, or fully turned, as in 10-2-D.

From that position, hanging naturally at your side, lift the left arm straight up to shoulder high. Seeing the left shoulder hinge pin just like a door, and not turning or rolling your hand at all, move your arm back and forth on the horizontal plane.

That is your horizontal hinge motion, on the horizontal plane.

On the angled plane of a swing, that will still have a feel of turn and roll, but you will find it much easier to keep your Rhythm, and square up at impact.

As to the advantages or disadvantages to 10-2-D, it is a very helpful way to learn clubhead control, and most beginners would benefit from at least trying it to learn to lean the shaft forward at impact and hit downplane. It does have somewhat of a power loss IMO over 10-2-B, because you are removing the advantages of accumulator #3 (turn and roll). It is also best used for a fade.