[Yoda]

Forget flat clubface surfaces and imagine cue through cue ball-to-billiard ball compressions and reactions.

Right on, Eddie. And remember folks...

Swingers using the On Line procedure -- Tracing the Geometric Plane Line as the Delivery Line (for the Clubhead) -- should direct the Lag Pressure Thrust through the back of the Ball. In so doing, the Clubhead will follow the visual Arc of Approach through the inside-aft quadrant.

However, if that Arc of Approach -- the Visual Equivalent of the Geometric Plane Line -- is used as the Delivery Line, i.e., to guide the Lag Pressure (and Clubhead) into Impact, then the eye should direct the Lag Pressure into the inside aft quadrant of the ball (and not directly through the back).

Hitters using the Cross-Line procedure -- the Angle of Approach Visual Equivalent (of the Geometric Plane Line) -- should direct the Lag Pressure Thrust through the inside-aft quadrant. As in both of the above On Line procedures, the Clubhead will pass through the inside-aft quadrant of the Ball.

Swingers or Hitters monitoring a Line Delivery Path (of the Hands) -- a Cross-Line procedure -- should aim their Thrust at the inside-aft quadrant. As with both On Line procedures above -- the Geometric Plane Line or its Visual Equivalent, the Arc of Approach -- and also, the Cross-Line Angle of Approach, the Clubhead will pass through the inside-aft quadrant.

For more on the Geometric Plane Line and its Visual Equivalents, study 2-J-3.