No, I'm not talking about combat golf. I recently reviewed some note from a few lessons I had taken. Bringing around my left shoulder under my chin on my back swing was one item my instructor gave me. I concentrated on this at the range and tried to re institute it back into my swing. I had a lot of power and everything was straight, even my driver.

Before I think I was under rotating my shoulders and like I was trying to swing the club almost completely with my arms. (Army Swing) I hardly had consistency doing this. I didn't dare to hit driver.

My question is, does my theory make sense? Does the shoulder turn (or lack thereof) make that much of an impact?

Thanks