[O.B.Left]

But the book states that the aiming point concept can change depending on invididual hand speed, either aft or forward. So if you stated an "aiming point" near the left foot, is that necessarily incorrect? That is, in fact, forward of the ball.

Staying true to the books definitions of things, itd be incorrect in my opinion. In that the the left foot is not on the Arc of Approach or Angle of Approach. The Hands may appear to be over the left foot visually, at Impact however. The Aiming Point and the Impact Hands Location are somewhat related but not fully interchangeable concepts. You do not thrust your lag pressure , the sweetspot at your left foot. The Aiming Point moves but not much , just a few inches fore and aft of the ball along the Arc or Angle of Approach, nowhere near your left foot.

To miss out on Homers actual Aiming Point Procedure is a loss. Its the alternate procedure to Tracing, a geometrical equivalent but with decidedly more DOWN and OUT in feel and in real too. Thrust being cross line, Down and OUt to Both Arms Straight. Moving the Aiming Point fore and aft manages the way longer clubs/levers switch ends, square up slower. Very useful things that the Impact Hands Location doesnt address.

For the record Mr Doyle, as the first A.I., had the insurmountable task of interpreting Homers crazy book of riddles to the masses. He did an amazing job and left a map for the rest of us to follow and refine. Respectfully.