Some thoughts…
I saw this on Boaters Resources which is pretty close to what I am thinking of doing inside Liza: Wood paneling and a couple of trays. I'm not sure what I will do for the roof though. I suspect that all wood inside may make her feel a little heavy (aesthetically not physically). And this trailer… (https://www.adverts.ie/boats/20ft-bilge-keel-yacht/6086255). With something like that I would not need lift out crane each year.