horse scrambles in the trailer when moving

Question
I am 53, my horse is a 12 year old Thoroughbred mare eventing at preliminary. She has scrambled in the trailer since I have owned her (bought her as a 2 year old) when she was alone. I have ridden close to 30 years. I have moved the but bar closer to her body, tried drugging her during a non competition season and just drive her around,not to zn event maybe just a trail ride, she is boarded, has a stall and group turnout. She does not scramble when she has a horse going with her - only alone. HELP! I wish I could buy another horse to compete with her, or always a buddy to come along and split costs, but that doesn't always work.

Answer
Horses don't like trailers, they are dark, enclosed, trapped and scary, so when with another horse they are not as stressed and it is less scary.   Making it not so dark, and open may help, she is 12 and knows a trailer will not hurt her, but she may know she has to go work and does not like that or she does not like to leave her friends or her home, whatever you can do to make it more comfortable and less traumatic will help, you could try and give her some grain every time you take her out of trailer then she may like to go in knowing she will get grain when she comes out.  

This is something other than trailer issue, I just cant know all the facts to figure it out.  There are lots of horses that need a home and getting her a travel buddy would be great for her, so that may be best option.

You can read my site about sacking out, trailer loading and herd behavior, it may give you some other ideas.

Hope this helps,

Rick