It depends.
Local residents will want to take care of their lake and protect it, to the extent they have the necessary knowledge. Most of the time, unfortunately, boaters don't know the environmental impact their boat has. If that information were in a code or guide that people were required to read before getting their pleasure craft operator card, they would be more careful.
Municipalities should still provide the necessary information to boaters who are passing through or visiting, or who can take their boat out just fine. Specifically, they need to know the navigable zones suited to the type of boat they have.