Keep the arms extended as much as possible making the swing more consistent, larger, and rounder.

Jack Nicklaus believes, as does Tiger, in a two piece swing. These two rotate so fast it is hard to see as they swing, but us amatuers swing slowly enough to place our poor bodies in the right places for maximum power.

The way to maximum power is using the large torso muscles from the back "A" postion to the front "A" position. So the downward swing should end up at 90 degrees with the clubhead vertical, sweeping the clubhead along the swing plane. In other words, the back "A" club position is not in a vertical movement, but rather along the swing plane which allows the clubhead to keep in the swing plane while hitting the ball and then reaching the forward "A" position. Anything less than a full 180 degree sweep ussually results in less power.

The maximum power (the speed of the club) is at the bottom of the swing. Of course using a teed golf ball would put the ball slightly ahead of the bottom of the swing, it's not a lot and it's the only way to hit the ball on the way up.

Remember the setup has the left arm in line with the club shaft. This helps with the back of the hand being pointed toward the intended flight of the ball at impact.

During this part of the swing we are working at keeping a solid triangle of the arms and body which lets the torso muscles do the hard work. If your arms and body get disjointed you will lose power. If you start cocking and uncocking the wrists you will lose power. And do not push your arms any further forward than the lean from keeping the arm and club shaft straight together. Anything you  do to get away from a rigid triangle means fixing a flaw and Jack and Tiger know the fewer moving parts the better the golf swing.

Your wrists will automatically turn over as your torso rotates. While you don't have to do anything special to make the wrists turn over, you should feel the turning over, if you don't your arms are going to be out of sync and there is no telling where the ball might go.Keep the club as extended as possible.

Both arms should be pointing at the shoot direction 9hopefully the green) at the forward "A" position. Your forward arm will break at the elbow just like the back arm broke at the backward "A" position. As you pass the "A" position you may stand up, not before.