I feel another good drill requires an axe, and log, tree stumb.. whatever.
When dirving maxium impact with an axe we need to let the "axe" do the work.
Consider the axe. Many people unfortunately fall prey to the misconception that axe handling is an innate skill, perhaps the birthright of all who possess the pioneering spirit. This is not true. While it's not rocket science, swinging an axe takes a bit of thought. It does not take long to figure the best "swing path" to get maxium striking power.
Once you understand the correct swing path of the axe, and the importance of letting the momentum of the axe do the work take this swing to the golf course.
Think about the many swing you see people trying, and then think how effective those swings would be using an axe. This is when you will recognize the importance of proper swing path.
Me? I don't need to use an axe I have used an axe enough times I know the proper swing, and all I do to remind me is to place both hands on the club in the same position as I do with an axe (wide apart) and let the hands slid together at the top then swing down. A couple times should do the trick. You may want to start on the chipping green to develope the feel.
It also helps with properly rotating the right side into impact.. (tempo).
OK, one short story the other day a gentleman joined us and during the round began talking about his excerise program.. 225 pushups and a 100 pullups. We were on a par five and he let it fly... me I just hit the ball like swinging an axe (the axe doing the work, me just hanging on). We were on seperate carts and he immediate drove to his ball 60 yards ahead of everyone, and got out to measure the distance to the hole. Then he looked down at the ball and realized it was not his but mine. No more stories about his workouts the rest of the round.
Try the axe swing, and then tee it up.