@ozski A lean jumper who knows how to set up ZO does not have a problem with it or prefer PP. The problem is that too many skiers don't understand ZO for jump and try to apply the PP thinking. It does not work. First thing that most need to do is REDUCE the letter. Unfortunatly, many drivers, even at class L and R also don't understand the system. Not many drivers have the chance of driving practice for someone going over 180 feet. Just like slalom driving, practice make perfect. OK go ahead and flag it off topic. LOL fyi ZO still has a switch for jump. Same as PP