I sold mine on Friday. Guy came from 11hrs away to pick it up and paid cash. I listed on Seattle craigslist and onlyinboards. I got one lead from OIB, a guy from Canada who seemed very interested but stopped emailing after a couple of days. I got 3 very good leads from Craigslist, the guy who bought it, another guy who test rode and went to talk to his bank (but it was sold by the time he called me back), and a 3rd near by who seemed very interested on the phone but it sold before he could look. I didn't get any lowballers or flakes from craigslist this time (although I did get a scumbag call [as usual] from some place offering to sell my boat for me). I put up as many pictures as craigslist would allow and then linked to an external album I uploaded (
http://www.massassi.com/albums/sanger_v210/). I tried to get every angle of the boat, including underneath so people could see it wasn't gouged from beaching or whatever. I decided not to bother with boat trader this time around because last time I got no leads from there and it just felt like a rip off.
The guy who bought it asked if there were any issues before he made the drive, and I was nervous about mentioning anything because I didn't want to lose the sale, but I'd have been pissed if I showed up and a boat wasn't as described so I listed every little thing I could think of that could be considered an issue. The biggest one was that the tires, although looking good with good tread, were original (from 2004). Buyer didn't seem to mind and went straight to the tire shop after the sale to get them replaced before the long drive home.
All that said, my boat was a bit less than half the price of the one you're talking about.