I was in my local tack store today picking up a few things for the new horse I am getting and mentioned that I would be bringing him home on Saturday and that it was a 7 hour trailer ride for him. The lady at the shop asked if I had any Equine Choice Paste and when I said I had never heard of it she told me I really should get some and give 20 cc's to my horse before loading him in the trailer. Apparently it is something to keep the hind gut working properly? What are the chances he would get sick from trailering for 7 hours? I do plan to stop for about an hour to give him a rest. I have only trailered this distance a couple of other times and the horses were fine but perhpas I was just very lucky and was too stupid to realize it. Another question I have is that the trailer is an enclosed 2 horse straight load. It is going to be fairly warm on Saturday about 65F I will open the two small windows in the trailer but I am wondering if I should remove the top half of the doors, I don't have a fan in the trailer.