I could have written the post above, great reply by need my wedge. Huge issue for me. I stop at 3/4 swing as beyond that the arm bends and all power is lost. I hit it better at 3/4 with a straight arm then full with a bent one.
Again as above, I concentrate on left shoulder under the chin and then start the downswing.
Just a thought, get someone to video your swing and hit full, half and 3/4 swings. You will be amazed at how big your half and 3/4 swings are still. You swing more than you realise, in most cases anyway.
The best shots I hit are where I keep the arm straight, I can feel the difference massively (I only don't do it now through lack of concentration, tiredness etc which unfortunately is more often than it should)
