What is the role of the second person on a vessel towing a skier?

Oh, dude, the second person on a vessel towing a skier is responsible for keeping an eye on the skier, making sure they don't wipe out and become fish food. They also help communicate with the driver and give hand signals to the skier, like they're directing a half-baked orchestra. In simpler terms, they're basically the skier's hype person, just without the pom-poms.