[12 piece bucket]

Thanks 12, for the comprehensive reply.

This is the heart of the matter for me-again assuming a square/square set-up. I just cant understand how a variation from plane line to target line of aprox. 1/2" (my guestimate) can be observed from the golfers vantage point as a definitive cross line motion.

CW

The Delivery Path of the Hands is inscribed on the face of the Plane. Try this out. Get one of them strectchie band thingies. Hold it in your grip with a club with it coming out of your right forefinger. Have a buddy step on the other end of it about where the ball or your aiming point would be. Take the club back up and in to the top. Now look at the band from your vantage point. It will look to you cross-line.

Or it least it does to me. . . . but if you got the down and OUT part then you can just Trace the Plane Line with your forearm. You got options.