My parents live on a smallish lake, with lots of power boats. Everyone marks the rocks by their docks, for personal safety
. There is a lot of weekend traffic on the water
from the campground and just about every weekend someone hits a rock because they don't know what the buoy means.
I don't know about legal
, but i doubt you would be responsible for someone else's stupidity.
If you run through someone's marked crab traps and wrap your prop, can you sue them?
Edit - when someone pulls them to shore after they trash their prop, they usually state they were curious what the buoy was for