I'll echo what El & Bill said. We are over there all the time and no one has ever questioned our porta-potty, though we've been checked and boarded by all sorts of enforcement personnel. Borealis is a C-Brat from Terrace Bay, Ontario, who has cruised the whole Canadian Lake Superior shore. He is also a Ministry of Natural Resources Conservation Officer. And I'll lay odds he does not have a permanently fixed holding tank. I think there are some regulations on the books that defy common sense and I think this is one of them.
Al