Right you are, asleep. The Closed Plane Line -- not merely a Closed Stance -- causes the Clubhead to approach the Ball more from the 'inside' the Target Line. When you reduce the Downward (but not the Outward) element of the Three-Dimensional Downstroke, you automatically produce a shot with less spin.
Why would you reduce the downward?
I assume the clubface is point at the target or slightly right (normal) despite the closed/closed?
The 'down' is 'Ball related' and in contrast to the Clubhead orbit achieved with a Square Plane Line. There is no deliberate attempt to reduce the 'down'in the Stroke itself. There simply is geometrically less 'Down' -- and more 'Out' -- in the Inside-Out Stroke (10-5-E) with respect to the Target Line. Similarly, there is more 'Down' -- and less 'Out' -- in the 'steeper' Outside-In Stroke (10-5-D). Again, these phenomena relate to the Target Line and not to the selected Inclined Plane itself.
The 'down' is 'Ball related' and in contrast to the Clubhead orbit achieved with a Square Plane Line. There is no deliberate attempt to reduce the 'down'in the Stroke itself. There simply is geometrically less 'Down' -- and more 'Out' -- in the Inside-Out Stroke (10-5-E) with respect to the Target Line. Similarly, there is more 'Down' -- and less 'Out' -- in the 'steeper' Outside-In Stroke (10-5-D). Again, these phenomena relate to the Target Line and not to the selected Inclined Plane itself.
Is this also changing the effective ball position in relation to the plane line?
I have only had a chance to watch one of the videos-great stuff.
Looking forward to watching them all.A BIG THANK YOU TO ALL CONCERNED FOR THE INSIGHT INTO THE PROS WORLD.