[Max Impact]

Let me explain how I teach an Aiming Point procedure. Construct a straight line from the hands to a point on the plane line. The right hand and arm should thrust/straighten forcefully, directly toward the aiming point. The ball will be long gone while the thrust continues. The aiming point should be where the right arm POINTS to when it should become straight, after the right hand passes the left shoulder. We're talking a couple of feet past the left foot on the plane line.

This procedure is a "feel", not so "real". Do the hands actually travel linearly to the aiming point? Hell, no! The hands travel in a circular arc through the impact zone, and as Joe has correctly poited out, are actually already on the way up and in while the clubhead is still on its way down and out. But does this procedure work wonders for keeping the clubhead descending to the left shoulder? Oh, hells yeah!