They have kicked 4 boats off of Lake Perry (Kansas) in the past 2 months. Our law is much more stringent than Missouri's. 86 dB's, water exit exhaust or unaltered mufflers and NO Captains Call. This new-this-year law has made about 1/2 the boats on our lake illegal. Wait until we power boats all get kicked off and we insist that they check all of the old house boats. Most have thru transom exhaust and few have mufflers.