[Yoda]

I'm working on extensor action.

The trouble I have though is that extensor action creates tension in my arms and hands and I lose the bend in my right wrist and cannot get any lag.

Is this just something I need to work on more until I can do it without tension or am I doing it wrong?

Daz,

Though you will have to 'think about it' at first -- there is no other way -- Extensor Action soon should become an 'imbedded' Feel (and not something you consciously strive to achieve).

Do this for me:

Without a Club, simply grasp your Left Wrist with your Right Thumb and Forefinger. Your Right Arm will be well-bent at the Elbow. Now, use that Right Thumb and Forefinger (via Right Triceps Extensor Action) to 'stretch out' your Left Arm. Don't overdo it; simply tug gently on your Left Arm.

That is the Feel of Extensor Action.

No more.

No less.

Now, use your Right Forearm and Elbow Action to take your Hands -- and with them, your stretched Left Arm -- to the Top. Don't 'work' your Body hard to do this...it should be relatively passive. Simply use your Right Arm to swing the Left Arm across the chest and your Hands to your Right Shoulder.

Maintain the 'tug' on your Left Arm throughout the Motion.

Then, swing down from the Top to the end of the Follow-Through (Both Arms Straight position). Hold your Follow-Through for a few seconds and again, maintain the Left Arm 'tug'.

Close your eyes and repeat the Motion. Feel the Active Right Arm. Feel it 'stretch' the Left.

Soon, these Feels will become integral to your Golf Stroke.

Just as does a computer Operating System, your Extensor Action will run silently but efficiently in the background of your Total Motion.

And life will be good...