I've been wondering about line stretch, hinge moments, and the like. I figured that line elasticity and the bow of lines due to drag might come into play. Brett mentioned something that got me wondering about line weight, too. Below is a plot of forces normal to a seven-strand, 70-foot .018" line on an airplane flying at 5.3-second laps turning a 15.6-ft.-radius corner while level. X axis is distance from the handle. Y axis is force. Units are weird, but the same for all three forces. I'd like to calculate how lines whip around in a maneuver, but I doubt if I'm either smart or industrious enough.