Could someone please explain to me why I get more questions about my Johnson 18 than I ever get about my Nacra 6.0NA. Good golly, every gas station I stopped at I had one or more people asking about the J18. Nobody EVER asks about the catamaran when I travel with it. Are multihulls that reviled?
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!
Nope, A Johnson 18 is not an outboard (well at least not in my case). We have his and hers boats in this household, as my wife dispises the catamaran. Too fast, too dangerous, too scary. Bah!
Anyways, I have always liked the Johnson 18 so I picked one up. Wonderful little boat. It does not have a monsterous sail plan but it does carry a main, jib and assymetrical spinnaker. It's an absolute blast off the wind and suits my wife much better than the Nacra. It's no catamaran, but it shines brightly in it's own way.
......and to think that a fellow catsailor told you that this boat was worth looking at.......
I still have nightmares! Ha! 
Monodull???
I thought the correct term was "monoslug".
That's funny, I have the exact opposite problem - I have a keel boat that my wife will have nothing to do with. Too slow, the heeling and motion in the water is uncomfortable, etc. She prefers the speed and flat sailing of a multi-hull. She really prefers the speed and flat sailing of a motor boat. Thus the jetski is HER water toy! 
My favorite is "Half-Boat"!
Slug would imply slow, which this is not. On a spinaker reach I can keep pace with my brothers Hobie 16. Even he bugs me to take it out more often. None the less, it is no substitute for my 6.0. It really does put speed in perspective when you switch from boat to boat.
I just wish the monohull crowd would loosen up and give catamarans a break. In all my years of racing perf, whenever I broached the subject of catamaran sailing, i was quickly drownd out by a chorous of "Get a real boat!" heckling.
I dont know about you but real sailing is a screaming double trap reach at 18 or 19 kts with everyone piled on the back of the bus grinning ear to ear and praying the next wave doesnt cause a lee bow to stuff and bring an abrupt end to the fun.