The most dangerous thing anyone can do on a boat is assume everyone else see's you. I have stated this in other threads, And now I'll do it again, 30 plus years boating and no accidents and always looked around and at other boaters as if they had no clue I was there. Saved my a$$ to many times The drinking issue has been beat to the dirt and won't go there.
Everyone does if you're in a DCB...