Jerry...
I like your way of looking at rotation. It can be intentional or unintentional. Needed for some types of curve casts and change of direction casts. Unwanted for straight line overhead casting to a target.
Check out p. 30 of Joan Wulff's book to see, clearly, a diagram illustrating what Harvey was talking about.
Gordy
From: jerry puckett <jerry_puckett2001@xxxxxxxxx>
To: Gordon Hill <hillshead@xxxxxxx>
Subject: Rotation
Date: Sun, 5 Feb 2006 11:02:12 -0800 (PST)
Gordy, in a discussion with Harvey Harris he ask me to define the term "rotation" as it applied to casting. On page 73 of Jasons book "Nature of Fly Casting," he writes, "Like creeping, the unintentional rotation (twisting) of the arm/or wrist while casting is a quiet thief of both efficiency and control.---Unbridled rotation causes the ROD PLANE to curve, thus distorting line loops horizontally." I think this is straight forward in terms of understanding.Harvey and I talked about the rotation of the wrist and this jogged my thought processes. Are there other areas of casting where the term rotation can be applied? (For example, in a long distance cast where the hips rotate much the same as in the motion as a baseball pitcher or golfer during the golf swing (Tiger Woods). Or rocking back and forth in the long distance cast; is this a type of forward and backward rotation?) In other words, can rotation be a three dimensional concept as it applies to casting?At present my thinking is any type of rotation that affects the Casting Plane and Rod Plane can be considered as "rotation" whether it contributes to a SLP of the rod tip or diverts it either horizontally or veritically. Can this concept of rotation start at the feet and move through the entire body ending at the fingers during the cast? How does rotation contribute to an effective SLP or distorted SLP?Can you help me refine my thinking to where the term "rotation" is a clearly defined teaching concept?Hope this is not to confusing, Thanks jerry