That's funny, I always thought your Johnson 18 tag was an outboard motor! I guess that's what messing around with outboards as a kid gets you... Still have a 1955 Johnson 10 and a 1948 Mercury Super 10...
But, if you really want to be reviled in some areas, try a jetski! I finally got my wife's jetski going this past weekend, and talk about dirty stares from people at the marina when I was launching. The cat just gets me ignored, but the jetski seemed to bring open hostility. Do my usual friendly wave or "how's it goin'" and get a scowl in return!