I have sold a milking goat and her doeling to a family in the Yukon. That is a LONG distance for her to travel. A 2 day trip. I would like to know the best way to transport them. The new owners want to bring a trailer with a wooden box built on it. They have not built the box yet and asked me how to do it. What size should it be, should it be totally enclosed or slates, etc. They plan on stopping often to let them out to stretch their legs and drink, etc.