Follow the Rail

Had a 2 hour session today because he needed it. I think the session went pretty good but our one issue was following the rail to the right at a trot. There were a couple of spots that he just couldn't stay on the rail. He would turn into the rail and head the other direction. I could not figure out what the problem was and it seemed to be left brained to me. At first I would keep him turning until we were going back on the rail in the same direction and then I tried the concept of "you want to go the left, me too, lets go faster". I thought being an introvent he would hate that. But, he flew to the left at a canter. It didn't bother him at all. Then when I asked him to slow, he did. Just perfectly, for him, I might add. Didn't seem right brained at all, hmmm, how interesting. Finally, he gave me a slow controlled trot for one lap, no exiting the rail, so I hopped off and called it a day. I'm always wondering if I did the right thing, and we'll see. The next time I ride, it should take less time, right? I'll keep you posted.