WJKY... just don't document the boat in the US. Non US citizens are not permitted to do that. I believe that the 45 days to leave Washington
State that Armagh was referring to is also to avoid State Sales tax. Coming back into the US, if you have a foreign flag vessel in the US, you used to have to leave the US for two weeks every year and re-apply for your cruising permit. Vessel movements are supposed to be reported to DHS but this is not practiced to the letter by many visitors. Many times a phone
call to the port authority or local USCG is all that is needed. Be sure you have all your foreign docs in order in the event you are boarded, including passports for all foreign nationals aboard.
As a delivery and permanent Capt aboard foreign flagged vessels, it was my responsibility to ensure that all the regs were followed to the letter, including reporting and ensuring that each non US passenger had the proper documentation
and visas to be in the US. The way it was explained to me on several occasions by the USCG was that if all was not in order, it was my license
that was at risk as well as the boat being subject to siezure. Capt Phil