What are the rules about mufflers?
Driving an unmuffled boat with pipes venting exhaust above the waterline directly from the engine with no muffler, or bypassing the muffler, is illegal on Muskoka area lakes.
Outboard and inboard/outboard engines comply with the law when they exhaust through the propeller hub under water.
Loud isn’t illegal, but muffler bypassing on our lakes is. If you feel a boat is violating the law you can report it to the OPP.