What is the matter with Hardwood?
Checkeboard linoleum held up pretty good in our race car trailers...two seasons anyhow. Yes it does get slick. Larger flooring stores should have and it varies in quality.
A friend of mine had Bed Liner sprayed on his floor (and about 10inches up the walls) It worked but that stuff is heavy. It cleans up good. He hauled dirt bikes in it, car washed it out.
I have seen a couple of solutions that I liked. One was a mat much like used in the back of trucks. The other looked like a mat but I'm not sure what it was. It almost looked "painted" or "poured" on. It was in a horse trailer. Felt like a rubber product but was supposed to hold up with horses. I'm not sure about price!
I f I put down hardwood, I couldn't afford the HD TV with DVD, bunk beds, refrigerator, microwave and A/C.
I like the idea of none slip surface, but there will be alot of horses in that trailer!