Thanks for the explanation, I see your point clearly!
Drift backward after the release of line into the backcast is good... I think what people are saying is that drift forward before the forward stroke is bad. At least that's what I am saying.
If the forearm stops vertically and the wrist snaps to 2pm, then the arm is not positioned to make a big stroke forward. The drift back increases the stroke length for the forward stroke, which increases load in the rod, which increases power in the loop, etc - so to your point the drift back after the stop on the backcast is definitely a good way of increasing distance provided the travel forward keeps the tip of the rod in the same line 180 to the back cast and has a gradual acceleration to a snapping stop in front.
I've learned the hard way (repeat hard way!) that hitting the power too early in the forward stroke -and/or- having any kind of deviation from the straight path results in tailing loops, twohanded or singlehanded.
Great description! Just a bit of clarification - what is the "lazy S
"? I see a "C" or sideways "U".
Thumbs up Sean