[Daryl]

Query # 1: Stationary Head & Extensor Action

In my lab time I have noticed that there is a link between a centered/stationary head and extensor action. If the head sways in the slightest the checkrein action of the left arm is impeded. Is it kind of like a dog owner yelling at his dog to stop running away by running after the dog, as opposed to simply stopping and allowing the leash to do its thing! So the benefits of extensor action are diminished by any lateral movement of the head?

Yes. When your head sways then your left shoulder sways.

Query # 2: Checkrein...right elbow...left wrist cock

I understand how the left arm checks the right elbow and causes it to bend in a precise manner. This bending right elbow then cocks the right left wrist or permits CF to do it in the case of swinging. What factors determine the degree of left wrist cock? How much left wrist cock is needed in order for it to be sufficiently loaded? My left wrist does not cock a great deal. I look a lot like a drive loader with the shaft almost point skyward at Top. Is it an issue of flexibility? How do I achieve more left wrist cock without getting the right wrist involved? Is it a function of more right elbow bend, or is it simply the weight of the club loading against #3PP?

Cocking left wrist. If you place the grip toward your fingers it looks like you cock your wrist more. Illusion.

My club is closer to my lifeline and it appears to be only 45 degrees to my left forearm. Illusion. It's fully cocked and will be level at impact.

You’re having a difficult time keeping your right wrist from cocking because you are bending your right elbow too much. Bend your right elbow just enough to cock the left wrist, then raise your right arm vertically with your right shoulder deltoid to raise your left arm. No more bending the right elbow. Your hands, left arm and right elbow rise in unison when your right deltoid is used.

Note: Bending or pulling your right elbow backwards, will cock the left wrist. It will also cock the right wrist if you go to far. You don't have to try to cock your left wrist. Using extensor action and the backswing will cock the wrist. One inch of right elbow bend is all that is needed to fully cock the left wrist.

I double cock the left wrist. It is more cocked. No illusion about that.