I too joined this site looking to become a liveaboard, and I am still in the process. The only reason I'm not living aboard this very second is no one will accept my offers on their boats, even when I offer them fair value. I'm looking for something 35-40'.
Just keep it up. Keep in mind that the sailing season is winding down, and folks will be looking at paying another winter storage for a boat they don't want or can't afford. I also think there are a lot of folks out there with boats listed that they really don't want to sell. You know "if I could get this much I could buy boat X so I if I don't sell for that I won't sell." Even if there boats are not worth that at all. There does not seem to be a lot of movement here in the Hudson Valley as most of the boat on the market seem to have been on the market for years. One broker was telling me yes, make an offer of half of what he is asking, it has been on the market for 4 years now. Obviously not worth what he was asking.