Re-mapping the course is super quick and easy. Idle to entrance gates, push arrow. Drive to other side, idle through gates, push other arrow, done. I ski at a private site and have to re-map every month or so. The two promo boats (ZO) and other SG boats have to do the same, maybe wobbles in the earths axis, or aliens, ancient aliens?
When I skied on a public lake I would usually idle down course before anything at speed to be sure there wasn't anything dangerous in the course (like logs or fisherman), great time to map the course. I would also have to re-calibrate the baseline RPMs for every speed (28-36) every few weeks due to changes in water temp, depth, and/or cleanliness. I don't miss PP Classic...