Robyn, it might be this man. He is in the south and someone on the gaited endurance list wrote that he does beautiful work.
http://www.photographsbydawn.com/saddleshop/cjsaddle.html We usually have Stephanie ride with a vaukting surcingle. She is very bright (getting A's and B's in a regular ed 8th grade classroom) but has poor head and neck control and hands that won't always do what she asks of them. She rides with a person at each knee and a third helper leading her pony. She asked once if we thought she could do an endurance ride. Bruce said, "It would take an entire track team". Nancy