+1 on Craigslist. Put in a picture or two of decent detail, include a price, and include at least a close-enough location. Don't forget the size of the frame and none of this "it should fit someone between 5'8"-6'0" tall" stuff.

Craigslist works for me in both directions. I don't keep track of success ratios though. I sold a 1980's Centurian on it a year or three ago, priced fair to my thinking, sold in a day or two. Sometimes I'll just use their email, sometimes I'll post my cell phone number without an email link, just depends on what I'm selling or giving away.