What is required if you are towing a skier?

When towing a skier, it is essential to have an observer onboard in addition to the driver. The observer plays a crucial role in ensuring the safety of the skier by keeping a close watch on them while they are being towed. This additional person helps the driver by monitoring the skier's position, signaling when to start, stop, or adjust the speed, and alerting the driver to any potential hazards or issues that may arise.

Having an observer onboard is not only a safety measure but also often required by boating regulations in various states, including Arizona. This requirement is in place to minimize risks and ensure that the skier can be safely and effectively assisted should they fall or require immediate attention.

The other choices do not fulfill the fundamental safety needs while towing a skier. A GPS device, while useful for certain navigation purposes, does not provide the direct monitoring or assistance needed for the skier. A second boat may enhance safety in some situations, but it is not a standard requirement for towing a skier. Lastly, helmets, while a good safety precaution in certain activities, are not typically mandated for water skiing under general towing regulations. Thus, having an observer is the most critical and necessary requirement when towing a skier.