I am sure you're horrified to think that we've been stuck at A, but the truth is, we sort of have been. In my own arena, I utilize the whole "court." I do a walk warm up around the outside and then do a variety of figures that include circles at A or C, serpentines, shallow loops, and changes across the diagonal.
On an OTTB who doesn't like any lapses in my application of the rules, this turned out to be quite the challenge. We tried it twice at the canter, but since I wasn't quite prepared, Sydney was allowed to get too fast which made him think that everything was going to hell in a hand basket. We ended up doing it at the trot for this lesson so that I understood the purpose more clearly.
Here's how it went: we picked up the trot and did a 20-meter circle at the barn end of the arena. Tracking left, I then made the turn down the long side through a narrow "chute" that had jumps to our left and the rail to our right. As we approached the other working end of the arena, we were to make a left turn (not using the rail) and come back down the other long side through another narrow chute created by fences and the rail.
JL told me to be prepared for a horse that was going to race through the chute and then lose the ability to make the left turn at the end. She was right. The exercise showed how heavy he can be on the outside rein and how much I have to work to get him to lighten up.
This exercise really worried Sydney. JL explained that he knew we were doing something different and wasn't sure that the rules were going to be the same. Our number one rule is no rushing. Slow and thoughtful is what we're trying to teach him. So when we started down the long side and I let him pick up speed, it freaked him out. JL had me stop him with the outside rein to remind him that nothing had changed.
We worked for a while on halting in the chute at both the walk and trot to remind Sydney that none of this work required rushing. By the end of the lesson, his ears were once again Eeyore floppy and his stride opened back up. We rode the open ends in a nice rhythmic trot that we were able to hold and carry through the chute. Sydney was so light on the outside rein that I was able to send him sideways so that he could bend around my inside leg as he made the turns.
It seems silly to be excited about using the long sides, but even Christian Schacht, the German clinician with whom I've been riding this last year or so, would recognize how difficult this exercise was for Sydney. I hope that we'll be doing it at the canter next week, but I won't be disappointed if we have to do it at the trot for a while. To ride it successfully, Sydney needs to be able to trust that I will be able to help him stay balanced and safe. That means I better get it together ASAP so that I can actually do that!