[12 piece bucket]

No problem. Again, the HSP (Plane Line) is not affected by a change to the vertical angle of the plane, either steeper or flatter. The Attack Angle will depend on WHERE impact is made on the plane. But, if impact is made at the same distance before Low Point, then the Attack Angle will be more descending when the plane is closer to vertical (steeper).

EDIT . . . I have been corrected . . . HSP is just the Machine version of the plane line . . . got it now . . . duh . . . sorry . . . .

Now . . . rephrase . . . does track man have any data on relationship of angle of attack and club head path as the plane angle goes from "steeper" to "flatter" . . .

Thanks Mr. Graham . . . for righting my ship!