I forgot to say, I got my current mare directly off the track at 3 years old in July. She was very unbalanced, and could barely turn right. I had her checked physically, nothing came up. Due to my boarding situation, I just started lightly working her, as she was already fit for racing. But she wasn’t fit for carrying me, significantly heavier than an exercise rider. So I kept it pretty light, mixed up days doing groundwork, practicing standing still for getting on, a little lunging, and would ride for 20 minutes to start. I started dressage lessons after 2 months and we didn’t do any canter in the lessons for… months. We would spend the first part of the lesson in walk, trying to get her supple and coming from behind. Until that was happening, we didn’t ask for trot. We did exercises to help with the transitions, repetitive so she knew what was coming (reduce anxiety) but also kept her brain and body engaged. She got lots of breaks, pats, and then it was back to getting a good walk before doing something more. If she broke to trot, no big deal, just circle and use the shape and the ring to assist in the downwards.
This took a lot of patience. She was nowhere near accepting the contact or “on the bit” for ages. I wondered if we would ever get to canter in my lesson! Of course I did some cantering outside of lessons, it was usually pretty unbalanced and I just focused on doing smooth half-30m turns around the short sides! And avoiding other people!
I started riding in the fields and trails with a pal - and this was great, she loved being out. My previous experience with OTTBs and other green horses is that having them canter in a bigger area gives them a better ability to balance, without turns coming up all the time as they do in the ring. Go up a gentle slope, no need to use the reins more than a gentle contact, they will usually break into trot themselves and you can put your leg on, push the hindquarters into your gentle contact, and do the same for the downward transition to walk. Of course this is fantastic for fitness too. My trail rides are usually 90% walk, some trot, and at most, a minute or two of actual canter. Some of that walk is up and down hill, which at first can be a bit scary (downhill on an unfit horse is very difficult for them to balance themselves and a rider). Slowly building up the hacking gives so much fitness and strength without doing endless circles. If the horse enjoys it, it’s a low-key way to improve all the aids as you do have to navigate turns, trees, wait for the other horse, etc.
I tried doing some tiny jumps in the fall of her 3 year old year - that was a disaster! She knocked a few poles and that confused her. After trying a couple times, I realized I was scaring her and I backed off completely. She then had a few months off in the winter. In hindsight she wasn’t balanced enough and couldn’t figure out her feet. (Another lesson for me!)
By her 4 year old year after getting her fit again, I decided to lunge her over a fake liverpool folded in half. No way she could knock it down and scare herself. We had walked over it already under saddle, so I knew she wasn’t spooky about it. That did the trick, after a couple lunge sessions she understood the mechanics of using her body to jump. And probably the time off, to settle her body and grow a bit, and then regain fitness, helped too.
The biggest thing I can suggest is having an open mind about what your green horse may or may not be able to do on any given day. Baby steps, as they say.