I don't know. Why don't you ask Pete Melvin?

I'm guessing you'd have to beef up the beams to make it wider. The wider platform would be less stiff and I've no idea how to correct that. The narrower beam would be easier to sail, "things" would be an inch or two closer and easier to reach.

So, I'd conclude the narrower beam would be one of many compromises.

If you can get Melvin to address the issue, I'd be greatful.