I just traded in my 32’ aluminum horse trailer with living quarters for an Airstream. I hauled horses for almost 45 years and my father sold horse trailers. Guess what?
I would never, never, ever put a horse in an Airstream because it simply is not built to handle the weight of a horse, nor for a horse to kick, stomp, pee or poop. When a horse shifts, that’s a lot of sway that’s going to happen, whether you think slant load or straight load. Sorry---but hopefully you’ll find another way to camp with Flicka!