I think I've found the perfect powerboat for you. No need to mess with that Reggie Fountain crap. And stay away from all those other Don Aranow wannabees too.
Riva- there is no substitute. My personal favorite is the Aquariva Super pictured. But pick your own:
http://www.rivaboats.com/
Wait, did you say under $60K used? Sorry, I thought it was 600.