[O.B.Left]

The length of the thumb should be the length that would allow the left wrist to be in a "level" condition at impact fix. Too long a thumb, stretched down the grip, would promote an uncocked left wrist.

And fully uncocked would zero out p.a. #3 as well, would it not. Good for putting or putt like chips maybe where you turn things off and go with one power accumulator only for simplification and increased consistency. Less than ideal for full power shots.

OB