Why should you avoid letting passengers lean over the side of the boat?

Letting passengers lean over the side of the boat is concerning primarily because it can lead to an imbalance, which significantly increases the risk of capsizing. When individuals lean to one side, their weight shifts the center of gravity of the boat. If this shift is substantial enough, it may cause the vessel to tip too far, resulting in instability or even capsizing. Balancing the weight on a boat is crucial for maintaining safe operation on the water, and any actions that disrupt this balance can jeopardize everyone on board.

The other options do not effectively address the critical safety concern associated with leaning over the side. While fishing might be easier with a lean-over posture, it compromises safety. Increased visibility might be a consideration in some circumstances, but not at the cost of passenger safety. Lastly, while safety regulations are indeed important, they encompass a broader range of practices, with avoiding leaning over the side as a specific safety measure rather than a regulatory requirement.