I want to make a point right off the bat that I’m not trying to manipulate the club here the way you see the Modern Golf Swing instructors telling their students to “hold off” the release through impact.

This is why pro golfers with plenty of athleticism don’t have any power – when you “hold off” the release, you have already slowed the natural momentum and speed of the club at the bottom, and so you have lost natural speed and therefor power.

Like this – note, I’ve slowed the post-impact down more to show how the arms and club aren’t releasing, not to try to trick anyone into thinking the club has slowed down to that extent:

I’m swinging down and through the swing bottom with no attempt to manipulate anything, and a snapshot during a swing is only that fraction of time – there’s no attempt to do anything to make this moment happen other than swinging.

When you do it correctly with the no-turn down swing, you are simply returning to your address position of being square to the target line with the shoulders, because the hips again will be open to the target line:

You can see by the club head’s position relative to the tee that it has already begun to swing inside on the arc post-impact.

My shoulders are still nearly perfectly square to the target line because I’m not turning to the target through impact, merely returning to the address position and letting the momentum of the club and arms swing me around post-impact:

If you think that my hips are still square, they may look so but they aren’t:

… as seen from a diagonal shot of a drive from the same day.

There’s no hold-off, just a swing down and through, letting the address setup, the back pivot and the down swing do all the work.