It is always suggested to thoroughly rinse boat and trailer after use in brackish water. The boat has tinned wire, with sealed connectors in the sump and there should be limited corrosion issues on those assemblies. The boats just require a good rinsing. The trailer harnesses are not tinned and we can not find a tinned trailer harness without having those custom built, which is low volume and very costly. They will degrade faster. The trailer has stainelsss components on hardware, though the brakes, rotors and calipers all need rinsed. The heat from braking increases wear exponentially when salt water is thrown in the system. We use a cadmium plated equalizer and components, though they still age in salt water. The boats used in brackish waters are often first seen evidenced in the bunk brackets where the carpeting holds moisture and people dont flush them with water enough. Those bunk brackets will definitely see first corrosion and it will easily be seen there. Then you have the engine, and those need flushed out when used in brackish water. The southern Louisiana tier of Shell Canal, Blacks Bayou and the marshes really take their toll on the boats, motors and trailers.