[jim_0068]

You can allow the left arm to bend some if the arm hangs naturally with a small bend.

If you start REALLY paying attention to the guys on the PGA tour, with their longer clubs (driver, woods, long irons) Even most of the pros are going to a VERY SLIGHTLY bent left arm to keep the extra strain off their shoulder.

This small "bend" really isn't even a bend, its more just like a small athletic curve to redistribute the strain.

With irons my left arm never gets high enough to where it has to bend but with the longer irons and woods it does.

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With extensor action you have to find a way to learn where is enough and not too much. Watch the Tom Tomasello series for some explanation and there is also a small free video on chuckevansgolf.com that shows extensor action as well that is helpful.