"Hitters using the On Line (2-J-3) Arc of Approach Procedure Trace the same Plane Line as Swingers -- typically the Square Plane Line of 10-5-A. Again, assuming the Sweet Spot Plane (2-F) -- as opposed to the Clubshaft Plane -- the Impact Point Plane Line lies on the Target Line, i.e., they are dually represented by the same single line.
Hitters using the Cross Line Angle of Approach Procedure do not visually Trace the Square Plane Line that lies atop the Target Line. Instead, they visually Cover the Closed Plane Line of 10-5-E whose Base Line actually crosses it (2-J-2)."
Help me understand this. How can you visually cover a line (in this case the Closed Plane Line of 10-5-E) since the club head is moving in an arc? I understand tracing a plane line, but I don't understand how you can cover a plane line. Any expansion on this would be appreciated.
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