On the Orvis website under Casting and Fishing Tips appears the following
"Where do I stop the rod on the back cast?
As more line is picked up off the water, the casting arc needs to get wider to maintain straight rod-tip travel and a good loop. So, when do you stop the rod on the backcast? The simple answer is, "as soon as your fly leaves the water." Regardless of whether you are picking up 20 or 50 feet of line, stop the rod when the fly leaves the water. The rod will no longer load at this point because it is no longer pulling the line against the surface tension of the water. "

Do you folks agree that the rod will no longer load once it it is no longer pulling against the surface tension of the water? I thought the weight of the line was sufficient to load the rod.