If my horses are going more than an hour away- hay net full with a bale in the back to refill- boots or wraps - if windows will be open FLY MASK- bell boots ALWAYS - shavings in trailer, they help the horse grip.
We stop pretty frequently to check wraps, boots, offer some water etc. I have never had problems feeding the day off trailering. I always make sure they have the feed an hour before though. You might want to just look into getting them profesionally hauled, it would be alot less work. We had Geof hauled up here from FL.
Also, you HAVE to have health cirtificates if you are hauling over state lines.