What is required on a motorboat or PWC towing a person on water skis?

When a motorboat or personal watercraft (PWC) is towing an individual on water skis, it is essential to have another person on board to observe the person being towed. This observer's role is crucial for maintaining safety, as they can keep a close eye on the skier's condition and communicate any hazards or signals back to the operator. This requirement stems from the need for effective communication and oversight during the activity, as the operator is focused on steering and operating the vessel. The observer can also signal the operator if the skier falls, needs help, or is ready to return to the boat, thus enhancing safety and situational awareness.

In contrast, while having a mirror for the operator can improve visibility of the skier, it does not fulfill the same critical functions that an observer provides. A GPS device, though useful for navigation, is not specifically mandated for towing skiers. Lastly, while having personal flotation devices (PFDs) for everyone on board is a safety requirement in general, it does not address the specific operational needs when towing a person on skis. The requirement for an observer is specifically designed to mitigate risks associated with towing activities on the water.