A couple of questions about fanning the trail (right for righthanders) forearm in start-up, assuming the trail forearm is onplane at address.
1. Is fanning and then folding the trail elbow a purely sequenced motion - does one fan to the limit of fanning, and then fold, or do they overlap somewhat?
2. Ideally, does the trail forearm stay onplane as long as one is only fanning - ie once folding starts does the trail elbow start to go underplane?
3. How much movement is there in the trail elbow during fanning and in which direction? For example I can fan (and trace) with my trail elbow pretty much dead still, or with it staying level to its address position and moving back parallel to the plane line - I'm not sure if (anatomically and with a golf like motion) I can trace and have the elbow move up the plane.