Skip,
Thanks for the info on the law as I was looking for it today as I want to be able to comply with the law in NH how ever silly it maybe. As Samiam posted a harley can run a pipe out the side with no one on them as the masses will fight to keep that off the list of things to comply. I boat in 3 states most summers and NH is the primay so I want to make sure im left alone with my family on this boat. I also have a Ski boat that im told is not a problem as to being to loud as that runs the Motor pipes onder the water.
Ignorance of the law is no excuse! Funny you have this as part of your post so I would say your a cop or a Lawyer? I also have the chance to hear about the Ignorance.
Thanks for the Reply and SAFE Boating to ALL