Got a cool tip the other day to increase lag on my downswing.
Hold the club upside down with the head between ur wrists and take a normal grip on the shaft just below the head.
Take ur normal swing and listen for where the end of the shaft makes the whoosh sound.
Mine was behind me to my right at approx. 4-5 o'clock position (assuming my head is at 12 and my backswing is up toward 3).
He then told me to try to make the whoosh at the bottom of my swing path closer to 6 o'clock.
After I did that a few times, we flipped the club around proper-like and swung at the ball. Not only did I add 15-20 yds on my carry, my scatter pattern narrowed considerably.
Kinda hard to describe without images but it obviously was a help to get my lag on.
YMMV