Its a lot about physics.. Sometimes a mental image can help. One of the epiphany moments for me was when someone compared it to a car hitting the brakes at 70mph...Everything in the car keeps moving at 70... that said.. JC's lesson would be top notch, if you are going to get a video, Look for the Orvis intro to flyfishing. I will probably catch a lot of heat for this, but the casting aspect on that tape really locked in the speed up and stop technique.. my $0.02.