Re: Recommend for trailer sailer with a real head?
I don't think it exists. At least, I've never seen any trailer sailer that came with a marine head, rather than a porta-potty. Of course, you can install a head in almost any boat, if you really want to.
But I think that if a "real" marine head is on your absolutely must have list, then you should give up on the idea of a trailer sailer. And if a trailer sailer is an absolute must, then you should accept a porta-potty as part of the trade-off.