[Mathew]

It is always hands controlled pivot ....

In the swinger they may use pivot thrust to drive the power package (law of the triangle - arms, hands and shoulder(which is also part of the pivot so it becomes a dual agent)) by 'flinging' or 'throwing out' your left arm but that right forefinger is still tracing that straight plane line which is your hands equivalent of the sweetspot..... on plane force

It is about what "controlled" means and it is not 'hands powered pivot'..... Homer was a stickler for precision in his text. The pivot and power package co-exist, your arms are connecting rods but the geometric precision is gained in its movement is through the monitoring of the hands......

Hands controlled pivot means it is your power package that influences the precision of the movement of the dual agent(shoulders)... it is not a haphazard turn like most pop instructors will let you believe.....

You can only maintain precision through your hands..... not your shoulders - your shoulder has no sweetspot equivalent to trace a straight line plane

What your power package does through time and space and how it assembled through the accumulators (out of line conditions) and disassembles is the deal in golf. Your body will never be able to make these distinctions with precision..... but only clumsily feeling its effects....