The Hand and the Arm" (Joan Wulff Fly Casting)

Excerpt: "Fly casting is the back-and-forth motion of the forearm and hand within the up-and-down motion of the whole arm. The wrist moves from bent down to straight. The forearm comes back in line with the upper arm. And the elbow lifts and lowers, to engage that upper arm action. It's an overall acceleration to a stop