[Yoda]

When does Longitudinal Acceleration begin?

Swingers begin the Longitudinal (lenthwise) Acceleration of the Golf Club immediately in the Start Down. In other words, they Pull -- Drag -- the Clubshaft Down Plane (toward the Plane Line) in the direction it is pointing. Hitters, on the other hand, Push -- Drive -- the Clubshaft Radially (directly from behind).