In one of his short features, Bob Jones mentions that you need to keep your right hand out of the stroke until it's time to turn on the power ('6/100s'). He goes on to say that even at that he finds it best to pay no attention to his right hand at all. He goes on to say that when he hooks the ball it is normally because he allowed his right hand to be active in the downswing.
I believe Jones' hook problem to be a result of 2 manisfestations of the hit impulse - trail hand cast which straightens the trail wrist, and trail arm thrust which straightes the trail wrist. In my case this action of my trail arm/wrist results in my not pointing the 'Rifle Barrel' at the target but left of the target. With the ball appearing where the barrel points.
In a number of the excercises, Bertholy recommends that the claw releases the 'club' but retains its shape and position. This image helped me today when a day of superior accuracy started to go awry. I kept the image of a retained 'claw' and the rifle barrel again pointed towards the target.
The 'claw' is similar to BGG in retention of the bent trail wrist but adds a bend of the arm at the elbow as well as an arm position next to the side. While my arm and wrist certainly straightened ('Rifle Barrel' position) my action likely delayed this so that impact position had a correct (Bertholy & IMA) bent trail arm.
