I really believe the traditional Golf swing has always had the ball position flaw which could never allow any golfer to trap the attack path of their club to the ball every swing.. and as result path delivery variations could occur at any time… that cannot happen with the Channel Lock geometry protocol… I don’t want to seem big headed but I categorically know why no Professional Golfer has been able to hit the ball consistently in the same starting direction ( Moe Norman/Count Yogi excluded of course) and that is because the traditional forward positioned Golf ball simply doesn’t allow a trapped delivery path of the golf club.
I would love to spend a few days with Tiger… I know I could get him back on track.. the protocol is infallible… apply it correctly and you start the ball in the same direction every shot.
You asked about why amateurs have trouble hitting long irons and generally finding the sweet spot consistently… I think it’s because they do not have a consistent radius lock in their swings which makes it hard to swing on a consistent fixed length arc …much like a a piece of string tied to a nail ..if you keep the string tight what ever is on the end of the string will arrive at the same spot at the bottom of the arc every time .
The other thing is being able to stay in posture shape at impact consistently .. if you move your upper spine forward or backward or up or down during the swing the radius changed dramatically in its distance and the path direction of travel … players that consistently hit towards the toe of the club at impact are usually moving backwards away from the ball at impact..conversly people who hit in the heel of the club are usually falling forward into the ball at impact.
So overall good ball strikers have good radius locks in their swings ..in layman’s terms.. they just stay in their address body ‘shape’ at impact… Tom Watson credits just that for his quality of ball striking.. he says ‘just maintain your address posture through impact as the most important thought application.