IMO, and not an authorized one I must say, golfbulldog, you're right in a lot of ways.
Per 12-2-0 the standard variation for the swinging basic pattern component 23 Delivery Path is Top Arc and Straight Line, not Circle. Of course that means down the Turned Shoulder Plane, the shoulder needs to go down that plane also, hence a parallel hip slide, or bump. If you don't go to End then there's no Top Arc out to Top before the straight line path.
And per 7-23, Delivery Line visual equivalents must comply with the cross-line procedure of line delivery paths and the on-line procedure of circle path. So you're right there.
However, the reverse may not be true. i.e. the delivery path (hands) may not have to comply with the delivery line (visual equivalent). For instance, per 2-J-3, the visual Arc of Approach applies to both 10-23-D (line) and 10-23-E (circle). The Arc of Approach is an optical illusion to the golfer. Tracing the true plane line is even more precise and does not alter the clubhead arc.
I might add that the reference to 10-23-D should properly say 10-23-C since it's the same as C, which is the preferred Turned Shoulder Plane. Why refer to the inferior plane shift?
Now, in 2-J-3 we have that the arc of approach and the angle of approach are always interchangeable. Hence Lynn Blake's equivalence in the Collin Neeman instruction video chapter 8, a swinging procedure.
The question hanging out, to me, is "Does a swinger bump cross-line when using Angle of Approach visual equivalent?"
I think not because of the difference between CF "throw out" and the hitter's right forearm drive-out. I think the difference is in the right shoulder's active versus passive participation. The hitter, if using the active right shoulder for a 4-barrel hit uses it very briefly, a fraction of a second before switching to a right forearm drive-out with the right shoulder as a moving platform to support it. As such, the right shoulder's motion must change to the new steep 10-5-E plane line which requires a cross-line bump. This allows the hitter to drive it down to China, chewing up a lot of turf.
The swinger using the angle of approach visual equivalent can start getting too steep and hitting it fat. Then according to Lynn on the video, it's time to go back to tracing the true plane line.
Hybrid Mode
