So what is speed control programming logic driven by? Certainly not the rule, as it is currently not rule compliant for slalom. Scores are down because the current ZO pull is different than what it has been before, and that frustrates people. But tighter speed swing tolerances are, I believe, more technically attainable then ever before. The tighter the speed swing tolerances, the more consistent the pull boat to boat and year to year -- so you'll be able to practice more competently than with the 56 different non-compliant pulls now available only on new DBW boats . Scores will go down initially but as more people practice with a tighter tolerance "tournament pull" they will go back up.ÂÂ