[12 piece bucket]

Good responses!!

So... is someone like Fred Couples, who has a bent left at the Top, using using Double Wrist Action, or Single with a bend(because of his grip)?

Per 10-2-0 . . .

10-2-0 GENERAL Grip Types are classified according to:
1. Whether the Hands are at right angles or parallel with A. each other or B. the Ground
2. The location of the #3 Pressure Point
3. The extent of certain Wrist Action per 10-18-0. Two Actions – Horizontal (4-A) and Perpendicular (4-B) regardless of Rotational Positions (4-C) – plus two Wrists make possible four combinations of Actions.

10-2-D is Couples grip and this grip is called Strong Double Action because the Left Wrist not only cocks but bends.

This should also shed some light on it . . .

10-2-G TRIPLE OF QUADRUPLE When the above Grip Types are MODIFIED by Rotating the Hands so that either or both Wirsts cannot Cock On Plane without also Bending, Feel loses its geometric basis. Also the natural Wrist motions conflict. A bit of Left Wrist Turn properly becomes exactly the same amount of Double Wristcock to keep the Clubshaft On Plane and to maintain Impact Wrist Position. Except with a “True” Swing (6-B-3-0) where Centrifugal Force will produce the “geometric” Flat Left Wrist when there is actually a “visual” Bent Left Wrist. That is, the Clubshaft and the Left Arm are in a straight line per 6-B-3-0 and 2-K regardless of the Left Wrist Position. These procedures may be either “Weak” or “Strong” but either or both Wrist are Double Cocked per 10-18-B.