You just made your used 165 kg boat very very hard to sell. ;-)
If I had a say, I'd be trying to get some younger dudes (that may not have a grip of $$ laying around) on them, otherwise the class will run into the same issues every other cat class is falling victim to...an aging population.
I agree with Surf City. I think I am the only one that participates in F18 on the west coast under 35.
Part of the problem is that 99% of our sailors originally sailed other catamaran classes. That doesn't add to the catamaran community or the sailing community. To grow we need to actively promote our class to young people. By that I mean take people who you think would enjoy sailing an F18 out on your boat. Even go as far as using them for crew in a regatta.
If my boat would have cost $20K when I was 22 (they used to be under $15K), I would have bought something else.