When a vessel is towing a skier what are the legal requirements for observing?

When a vessel is towing a skier, legal requirements typically include having an observer on board who is at least a certain age (often 12 or 13, depending on local laws) and can effectively monitor the skier's safety. The observer must maintain a clear line of sight of the skier at all times while the vessel is in motion. Additionally, the vessel must adhere to speed limits and no-wake zones in the area where the activity is taking place. Always check local regulations, as they can vary by state or country.