How long should the tow lines be if a boat is towing two skiers at the same time?

When towing two skiers, the tow lines should typically be about 75 to 100 feet long. This distance helps ensure that both skiers have enough space to maneuver safely while minimizing the risk of collisions. It's important to maintain a consistent distance between the skiers, so adjusting the lines accordingly based on their skill levels and preferences can be beneficial. Always ensure that the towing setup complies with local regulations for safety.