I've had ongoing issues with my backswing, and realized last night I haven't been allowing my left forearm to rotate properly in the backswing.
I found after allowing my left forearm to turn clockwise about 90 degrees that it's easier to turn my shoulders further without overturning my hips. Ideally I assume the left forearm (not the upper arm) should rotate to a point where the butt of the club is pointing at or a little above the target line the ball is on.
In the last few months I've had issues with the backswing where I felt like I was getting stuck, and not sure if I was turning my shoulders and arms correctly or getting onto the right plane. I had a recent lesson where stance and posture were an issue, but even after the lesson I was having the same swing symptoms.
As I was focusing on other aspects of my swing, I was just telling myself, "raise up the arms", but not allowing the left forearm to rotate as well. Before I was just trying to turn my shoulders and raise up my left arm on plane, and let the club hinge naturally, but the results during the downswing have usually been bad.
The left forearm rotation has probably been natural or common-sense for most golfers, but for me I'm wired in a way where if I haven't told my limbs to do something, then they won't necessarily do it. I've had many swing problems the last few years attributed to this aspect.
Are there any other _thorough_ drills or videos to recommend to help groove proper left arm movement in the backswing? I found this one drill by Jeff Ritter that seems pretty good. Based on his breakdown of the arm movement it's like I can rotate my left forearm up to the proper swing-plane.
I found another drill related by Sir Nick Faldo from his Swing for Life book that is demonstrated in this video:
What Faldo also does in his pre-set position besides cocking his wrists is to rotate his left forearm, which I just now put together.
Any other drills or ideas would be appreciated.