Simply put, weather. The state of Florida averages 54″ of precipitation every year. And, yes. While boats are designed to get wet. Standing water sitting on the deck of the boat isn’t good. Seals to engine and electrical compartments can also leak as well. This can cause damage and repair headaches on a day you were expecting to be out on the water. Boat dock and lift covers, whether dock or piling mounted can decrease unwanted problems and repairs.