I have this horse or maybe his brother. Mine is a Connemara paint. He is an incredible jumper - he can compete with most big horses if he wants to. I guess I am glad I focused on eventing with him because it has forced us to stick with dressage. That has been the key.
I am certain most pros would have given up by now. It has taken me 4 years from when I started him as a 5-6 year old, with a mystery shoulder injury or something the massage therapist found and chiro agreed - but it was from being cast as a young horse - he was a stud and unstarted at the time. So I have taken him from this mess to where he is now.
Last weekend all our training level scores were around 70. I have never ever worked with a horse this long and only been at training level dressage. Admit that in my warmup I would half pass to the left and shoulder in - his WORK is higher level in the trot though in any extending trots he wants to get fast - the lateral work really is key for him. We have been stuck with his canter work needing LOTS of love.
First of all, I have trained a lot of horses but this is my first Connemara and I think part of it is the breed - lots of heart and power XC - but for me to try to explain to him to canter differently - ie, slow, use his back and in the moment - to wait and listen to me and not just assume its the pony express… this has been a challenge. Just getting it across to him to think WITH me.
Dressage work as been key - And its had massive huge frustrating I GIVE UP moments - even when I got decent scores, the test felt laborious for me. Ride every single stride. But I was going against his nature in a way and I think now that he is 9-10 years old - he is officially mature. He actually likes the work.
PRACTICALITIES - a lot of lateral work - transitions - teaching him to sit back and relax through the back - totally key. Canter loops, counter canter, canter leg yields, stretchy work.
I did switch from a French link eggbutt to a thinner reg snaffle D ring. For him, I think it would make it worse to go strong strong.
Just two weeks ago, we were doing some dressage canter work and he was listening to everything - he fell out of rhythm because canter leg yields are difficult and I balanced him slightly and he was totally mentally engaged, he sorted it out with a relaxed back - he thought through a back to front lead change - something I only got over fences on the fly, literally flying.
Last jumping clinic I went to - was SO great - the clinician is a rolex, international eventer and she said WOW, how much better you and your horse is after the first 20 minutes of the clinic! And I thought - its because I was riding the horse he was last year and he has slowed down so much that I need someone to fix me because I am riding defensively. Another sign that he has come so far.
That is my experience with a hony like your clients. Dressage work was key - a lot of lateral work. But it takes time.