casting
 

can some one tell me how to stop casting?

Good Question
 

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You need a camera to actually see if you are CASTING... Full Sweep, with the left wrist angle (#2 Accumulator) being lost very early.

I had good results with several people having them practice with a TOY SWORD... that shoots out like a telescope. Swing it, and shoot the sword out at Both Arms Straight(9-3-11), using PIVOT THRUST.

Try using a lagging clubhead takeaway with some float loading.

Stop trying to hit it far and straight.

Dedicate your range time to doing start down waggles. Make sure you know what alignments you are looking for when you do this.

Their knuckle dragging cousin is "the pump" drill.

Bagger

An excellent way to train - one of Martin Hall's gadgets from the TGC show he did a while back, and the same concept as the 'power release' by Rover golf, and Doyle's sand/bottle.

An oven mitt 'shooting off' your hands can be a good proxy, expecially when aimed at the base of a wall at about a 45 degree angle.