First is a thorough visual inspection of everything after you remove the boat cover. Look closely for any damage to wires, hoses, and fabric or if your boat was some critter's "Motel 6" over the winter. Inspect the steering parts, controls, etc. for any corrosion or damage and make sure everything operates correctly. Fuel hoses, clamps, fittings, and fill caps should be in good shape with no seepage, cracking, or deterioration. It is also important to change filters if needed and make sure the fuel is not varnished, contaminated, or stale smelling. Safety equipment such as horns, flares, fire extinguishers, and life jackets are super important and have to be in good order and check expiration dates.