[12 piece bucket]

Hitters covering their 10-5-E Delivery Line also indirectly Trace the Geometric Plane Line of 10-5-A (from which 10-5-E is derived from). But the linear force produced by the Right Arm Thrust may cause the Clubhead to go 'above Plane' during Follow Through. Which is alright as the Ball is long gone.

I would like to jump in here too. 2-J-3 is WAY different in the 5th edition than the most up to date 6th at this point. There are some things from the 5th that failed to make "the cut." However, I think they are invaluable in the regards of Delivery Lines and Delivery Paths. Here's some stuff from the 5th that I think is particularly ingenius:

First of all the title of 2-J-3 was PLANE LINE EQUIVALENTS in the 5th.

1. Although the Base Line of the Inclined Plane is the true geometrical Plane Line it is not the only Delivery Reference Line available.
2. Locating and "Fixing" the selected Delivery Line (refering to the Clubhead only including the Plane Line) is a mandatory Address procedure.
3. HOW DO YOU SEE THE LINES (Plane Line, Arc of Approach, and Angle of Approach)?
4. Remember per 2-J-1 IMPACT ALIGNMENTS The geometry of all alignments stems form the Impact geometry requirements
5. The above Lines are made visible, and the correspinding Feel of the straight line Lag Pressure Thrust, is established by moving the Right Forearm and the Clubshaft On Plane during the Address Routine.
6. THIS HUGE IMO - Get your Right Forearm On-Plane and you can see the Lines . . . Why?
7. The Right Forearm also presents the correct Angle of Approach and its utilization is FAR SUPERIOR to all other procedures.
8. How do you do this?
9. Get your Right Forearm On-Plane during the Address Routine and Takeaway, adjust the Clubhead Angle of Approach to APPEAR PARALLEL TO THE RIGHT FOREARM.

So what you do is get your Right Forearm On-Plane at Fix. Look at the Line extending down and out to the Plane Line. Now imagine a line running PARALLEL to that line at the Clubhead. That is your Angle of Approach Delivery Line suited for "Cross-Line Hitting."

Check this out at your crib. Find a place in your house or driveway where you have a straight line. Get two dowels out. One will substitute for your club. The other your going to lay on the ground. The line on your drive way is your True Geometric Plane Line. Now set up to the Plane Line and go to Impact Fix. Get your Right Forearm and Dowel IN THE SAME PLANE. Look at where your Right Forearm is pointing: Towards the line on the driveway well down it and extending Across it. Now imagine a line running parallel to your On-Plane Right Forearm where the ball would be. Now place the other dowel on this line. Check it out. That is your Clubhead Delivery Line.

Note: As your ball position moves back, your Right Forearm points at a different angle. Therefore changing your Delivery Line as well.