Not exactly a question, but I see where you're going. We went through dozens of prototypes and many seasons of testing to find the optimal rope length.  Slope Ropes have been designed to be long enough that you are able make full parallel turns behind your skier (and ski quite naturally while still controlling your child's speed), and short enough that you aren't too far away (no out of control skiers or snowboarders trying to pass between you and your child!). In addition, the rope is a manageable length for carrying – it takes just two folds of the rope to stash them into your jacket or a big cargo pocket for the ride up the lift.