Trailering my horse long distance

Hello. I am planning on taking my horse to Vewrmont (from Ohio) Next summer for a camp/training session. I don't have a hauler yet, and need some help finding one. I'm not sure how to find someone to take my horse that far and back. I'm also wondering about cost, and a little worried about him.

He's good trailering, but has only been trailered 2 hrs before. He will be trailering for about 12 hrs this time. I was wondering if you have any tips to make it more comfortable for him?

Also, are there people who will trailer him there, and back? We will be staying for a week, and I'm worried about finding a hauler for both ways.[/b]

Can you contact whoever is putting on the session to see if there is anyone in your general vacinity who is going too? You may be able hitch a ride for your horse. I know there are some rental agencies in our area who rent stock/horse trailers, maybe you could look into something along those lines. I would think renting a truck and trailer and driving yourself would be cheaper than hiring a hauler.
Make sure you check the states you will be going through for what papers your horse will need. They are all different some just want coggins some want health certificate with different tests and proof of ownership.