When you’re done, one end of the cable should be on one side of the coil, and the other end should stay on the other side.
Exactly. I tend to leave the free ends a little longer than usual so they hang down beyond the coil and can’t “dangle” through the coil by themselves. It helps to maintain the configuration you described during storage. That way, I never get knots.
Over-under is second nature now and I do it very quickly. I have the neatest cables and quickest stage setup/clearing time in my band. 
