There is a statewide noise ordinance in New York which I c an't find right now but it limits boats to 90 db at idle tested at one meter behind boat (other specifics excape me at the moment) or 75db on a drive by test. Very specific testing requirements and there are few qualified enforcement personnel. Lake George has personnel with testing equipment and enforcement can be, shall we say, enthusiastic though most often it is as a result of someones complaint. The regulation does require some sort of sound reducing device but that does not automatically mean you are illegal. If you do not have dry headers then the water injected into the exhaust stream may constitute adequate muffling as long as you can pass the sound level test. Others can add more especially testing procedures. You might try a search on the board, this has been discussed before. Hope this helps.