Comment by hylaride

Fun fact, there is a long standing exemption to the unreasonable search and seizure protection laws if you're out on a boat (it may only be on the open ocean and Great Lakes, though IANAL). One of the earliest Supreme Court rulings essentially said that without it, it would be impossible for the US to enforce tariffs, which were the main source of revenue at the time. Anybody who boats often enough has been boarded by the coast guard for various safety checks that allows them to poke around and there's little you can do about it.