UPDATE: Given how I search these forums for advice, I wanted to update this thread, especially since we’ve actually made progress.
From September to November last year, I continued riding and attending clinics, but the cross- cantering continued. I was discouragd beyond belief, but my trainer kept telling me that it was strength-related. Some days would be great with only one change and it would be followed by a ride riddles with changes. To make sure it wasn’t just me, my trainer hopped on and had a lovely ride, but it included lots of swaps as well. Finally somewhere between November and December, I started to have longer streaks of good rides with one or no changes. And it has gotten so much better since then, that now they are infrequent.
So I really think this was strength and balance related, but my riding had a huge effect as well. Late last year, I started riding with the thought of shorter reins and keeping him more balanced back over his hindquarters. As a big, young horse, I spent the first 18 months (I think appropriately) encouraging forward and seeking the bit down. I really did not spend much time balancing him back, at least in the canter. I thought just letting him pick his own working canter (which was not rushing) was fine. I was wrong. I will concede that maybe it took time to build to a point where I could ask for this balance, but I sure wish I had tried a little more of this earlier.
Now, I start each ride in what I call a conservative canter. It’s not as forward or pushing as it will be later in the ride. I use lots of little half halts to keep him balanced a little more up and back. It’s a fairly boring working canter where I keep him very balanced with thinking of keep his hindlegs under us.
Straightness has also been huge. I really make sure I am balancing him with my outside rein, sometimes with a touch of counter-flex. Too much of this is also not good, so I have to be careful to allow his neck to follow around the bend as well without blocking.
Overall, once I rode with a touch more “collection” (I hesitate to use that word on a young horse), but truly thinking of riding him a bit more up and under, everything started to improve. We ride in more of a first/second level canter, instead of training level most rides now.
Now that we are schooling shoulder-in, legyield, counter-canter, and haunches-in in the canter, it is improving amazingly. I can still unbalance him and get an accidental change if I ask for too big of a canter without support. Also, if he’s tense, the changes will still come out occasionally.
However, I was thrilled that we were able to show training and first level without any changes during the tests (and only one during warm-up). It’s a work in progress, but the solution was not to ride more down and round. Instead, I had to pick him up and think of haunches under and front end up all the time.
I’m not sure if all of the injections made a difference. It’s possible that those helped quiet some soreness to allow us to have these break throughs as well. So, if anyone reads this down the road, have patience and get yourself balanced over the booty!