onomatopoeia wrote:
I originally posted this in the Vista section, but received no responses.
I saw your post but don't know the brand they used in our 348. I won't be to the boat until later in the week (with luck). But perhaps asking Four Winns as to who supplies them might be a good first step. I'd imagine anyone making such mattresses would have a way to order one made to custom dimensions. Usually you end up tracing the existing berth and/or mattress and sending that in as a template. These folks often have booths at local boat shows.
We have the inner spring mattress and have found it comfortable. As has been suggested a viscoelastic mattress (aka Thermopedic) could certainly be cut down to fit. Personally I don't quite like sleeping on that type but others find them great.