$20K is quite small for something that size. BUT, I've seen a few "Crowther" (I think thats how you spell it) tri-marans in that range. One recently on ebay. Be sure to check the soundness because it would probably be a woodie. If its built right then you should have no problems. I have a Stiletto and can attest to the attributes of those. A cruiser its not other than short stints. For outright comfort you'll need something larger.

JMO,

Clayton