First my affiliation with the business I'm about to recommend is nothing more than having spoken with literally dozens of satisfied customers including the owner of the Tartan 40 I crew on, a boat that was purchased with the assistance of the folks at Norton's Yacht Sales in Deltaville. They are a Hunter and Jeanneau dealer. I have no idea what experience they have with cats, but they have a reputation for satisfying their customers so what can it hurt to call them? The owners are Ken and Carolyn Norton Schmalenburger.
I didn't take the advice to choose a broker to work with and treated my purchase more like buying a used car than buying a house. Based on that experience, I definitely think working through a single broker is the way to go assuming they show they are tryng for you business. I think this would be especially true for a long distance deal.
The one downside is Deltaville isn't a hotbed of Catamaran activity.
s/v Palmetto Moon
1991 Catalina 36