Thanks for raising this one Lagster, provokes me into writing which, like Bagger stated, can crystalise one's ideas.
I believe there are 3 stages of the journey to what i believe is Homer Kelley's true definition of "hands controlled pivot".
1.
Pivot controlled hands
2.
"Conscious Hand sensation" controlled pivot ( imperatives required / essentials desirable)
3.
"Conscious hand motion" controlled Pivot ( Imperatives and Essentials are MANDATORY to make it work)
Stage 1 (pre TGM)
Pivot controlled hands
Most golfers who have played/learnt golf in the last 20 years come to TGM with little or no concept of hand sensation or movement in the back or downswing. They may even have been told that the hands are responsible for all the problems in theri swing.
They have their mind in some part of their body/pivot and have a vague awareness of swing plane ( getting the arms and hands sufficiently "up" in the backswing) but that is about it... pretty much everything else is "downswing blackout".
then, one day, they happen to chance upon TGM based knowledge....
They are allowed to consider the role of the hands.... not just passive clamps...CLAMPS THAT FEEL!!!!! pressure points....straight plane line.... lag pressure....flat left wrist....
STAGE 2
HANDS "SENSATION" controlled pivot
Their core knowledge of TGM allows them to feel lag loading ( this alone is a revelation) ....once recognised they can feel and identify the location of their hands are in the downswing and sustaining that sensation produces accumulator lag on the video cam.... ball striking improves...all is well.... they have added some downswing illumination and hence precision to the downswing.... less blackout but not yet daylight... many stop at this level...
BUT they still feel that the majority of active movement is in the pivot...leaving the hands purely as clamps which provide a
CONSCIOUS LAG PRESSURE SENSATION.... basically they feel the lag sensation developed in transition.... recognise it and consciously point it at the aiming point whilst getting their pivot to do all the work...
I see this as Lagster definition 2 - mind in hands.... but .... still very conscious of their pivot work....
STAGE 3
HAND MOTION ( OR INTENTION TO MOVE HANDS ) Controlled Pivot
This is the Holy grail.... the conscious and deliberate MOTION of the hands actually causes the pivot to move.... both to provide power package transport and move out of the way in anticipation of the club's release....
This , I believe, can be achieved IF you
truly adhere to the imperatives and the Essentials.
IMPERATIVES and ESSENTIALS are the framework, the scaffold, which allows the hand motion ( or "intended motion" of the hands) to control the pivot. If you have educated your body ( all 3 zones) to TRULY understand the mechanical restrictions/consequences that the body parts are placed under when you adhere to the "letter of the law" of the essentials and imperatives....
THEN , and only then, can the pivot respond appropriately to
conscious hand motion.... it is so easy to get it wrong.... and make it look like the hands are moving independently of the pivot.... but i believe that in those cases You have not adhered to the essentials and imperatives.
On the video cam it will look like the pivot has moved first...and it has... but the hands are able to travel a bit quicker because they are travelling along a pathway which has been learnt and programmed.... they respond immediately to their programming and do not have to wait for you to consciously experience lag pressure.... too slow....
This is pushing the envelope of my current TGM knowledge and experience.... i am putting this forward to debate... shout me down if you think I am crazy or overloaded on Kool Aid.... but I think I am right.... and I do not usually say that on these forums!
Now to really push the envelope of my knowledge..here's the science bit!
It is well known that the brain has excellent proprioception for hand motion, signals passed from hand ( muscles, joints etc) UNCONSCIOUSLY and MORE RAPIDLY than the pressure sensation that we experience as "lag pressure" ( different neurones/ different speed of conduction/ different central processors). If there are two parts of the body which are more acutely monitored by your cerebellum than the hands and the head... well, i would be amazed....and by head i include eyes.... hand eye coordination is as much henad-head coordination IMO....
Any wonder why Homer talks about the hands and head so much??
So
Conscious hand motion is actually using
Unconscious hand sensation to monitor and control it. This sensory system has to operate at higher speed than conscious hand sensation. However, the cerebellum requires training to develop the neuronal pathways for precision delivery paths of the hands. Slower process required and conscious hand sensation can aid this ( see stage 2).
Now that is enough to be going on with.... i am just going to duck for cover ....awaiting a few incoming rounds....
