The problem I have with two horse trailers and horses that don't like them is that if you put one in there as described by Wilson_Cattle_Company and they decide to freak out then getting them out safely is a problem. If you have the butt chain on them or the door closed and they get their weight up against it you will have holy hell trying to get the chain off or the door open. You would probably be bette off to let them fight it out and inspect the damage after it's over.
I haul my horses in my stock trailer not even tied. I went a while back to our secretaries house to break a couple of horses for them.(

race horses

) I took my horse just in case something happened and one got away or something like that.
When I got there her husband and son about lost it when they saw my mare wasn't even tied. :shock

in the trailer, wasn't like she was going anywhere it a bartop) They got excited about what might happen and were trying to figure out a way to help me.
After they saw her dispostion and I told them thats how I haul her they calmed down some. But truthfully it's just those dang race horses don't have a brain in their head and my mare at least has alittle sense about her.
Sorry to get off the subject here. :roll: