I personally would have no problem using a livestock trailer, but I do prefer given the choice to us a horse trailer with partitions, which helps the horse balance a bit better, and they have the breast bar......having said that if its shetlands or small ponies, quite often the breast bar is of no use to them, as its too high, and they can walk undernearth. I know some people do not tie up their horse when travelling, but I do, although if its a young one, or one who has not been handled then leaving it loose is probably safer.