[O.B.Left]

I don't think that HK was against using the Wrists. He did say that the muscles of the Forearms "Are Available" to uncock the Left Wrist. On the other hand, references about using the procedure are nonexistent in the book.

Quote:
6-B-2-0 THE SECOND POWER ACCUMULATOR When the Left Wrist is Cocked (in excess of the selected Clubshaft-Left Hand Angle (6-B-3) in the Address Fix positions) it forms the Second Power Accumulator. It’s the true Velocity Accumulator because of the shortness of its travel time (during a Maximum Delay Release). Centrifugal Force, Accumulator #1, the muscles of both forearms, any – or all – are available to actuate this Assembly. Its “in-line” condition is FULL EXTENSION as determined by the Accumulator #3 requirements – if any. It is the “Downward” (Angle of Attack) Motion per 2-C-0 and 2-N-1.


Also, Jorgensen's study ("The Physics of Golf"), tested the use of active wrists with his double pendulum model and concluded that the procedure reduces Clubhead speed unless a Golfer is Skilled enough to actuate them within 70 milliseconds of Impact. He concludes that if it's possible, it's effectiveness is only marginal and lacks the speed increase of a delayed release procedure.

Nice. We're getting way off topic but nice. There are some references to using the Hands and Wrists "actively" to find them you must combine several of the 10-20 Release Triggers that relate to the Hands or Wrists with the Non Automatic Power Package Releases of 10-24.

Homer listed the 10-20 (RELEASE) TRIGGER TYPES in a manner which corresponded approximately to their Release Point 11-24, Full Sweep, Random Sweep, Snap and Flip. See 10-20-A THE HAND THROW, which could be employed in a Non-Automatic (active) manner for a Full Sweep Release. Or 10-20-E WRIST THROW. Which when done in a 10-24-D Non-Automatic Snap Release manner would produce a very late Snap release point, a smaller pulley wheel (Endless Belt Analogy) for added power.

So Homer's Hands, I guess, arent necessarily "passive" in all of the several trillion effective stroke patterns he catalogued and he and Prof Jorgensons would appear to be in conflict about the effectiveness of an "active wrists release". If I read your quote above correctly. Also Homer does in 10-20-0 suggest the existence of non listed Trigger Types, "X" classifications which might include Lags "firing" hands, maybe? I Dunno.