I hear the John F Kennedy is available!
Seriously, we have a 22 foot Cobolt bowrider and she handles the lake very well. When I first got into boating (with my own personal boat) on Winnipesaukee I had a 16 footer with a 30 hp bow rider. That's too small for a windy day unless you don't mind getting very wet!
Try different brands and lengths out in different conditions before you buy. This will give you an idea how they handle in various conditions. I would think that if marinas know you are serious about buying they will accomidate your requests and if they won't...well that tells you something about that particular marina