"How about someone anchoring too close"
Back in the 70's the folks with zero experience could rent steel house boats to cruise St Thomas & St Johns.
The boats suffered from almost zero maint , and almost everything on the boats were hooked to a demand start generator. No muffler installed.
When the charter folks would use the head , the noisemaker would start to flush the head.
The house refrigerator added to the noisemaker night time run time.
The only charts aboard were table place mats , and the "captains" were told to anchor by the sailboats , as there would be water enough.
Dentists from the mid west thought parking 2 or 3 car spaces away was fine.
Our technique , upon seeing one of these horrors enter the harbor was to strip bare ass.
As soon as they saw bare everything , all would decide the other side of the harbor was preferred.
40 years later , by bare body would probably send them to a different harbor !!
But it works to give swing room!! /
FF