I dont believe that boat owners will get away with that. It will be very difficult to convince the French authorities if you have one tank. i would say 2 tanks may be an answer. It all depends as to how the law is enforced. After all do you all do your archery practice on sundays, or has that law been repealed, and isnt there another one about shooting scotsmen in york, I would like to invite the minority leader brown to York before he wastes any more of our money.