[QUOTE=ToN Farm;8526336]
In order to improve/develop a horse with conformation difficulties, the rider needs to know what they are doing. That doesn’t come naturally. That comes from time spent in training. Most riders capable of riding well enough to bring along a poorly conformed horse choose not to buy such a horse. Most good trainers are not interested in working with riders with such horses because <good> trainers are busy, and their book is already over flowing with a waiting list. The large majority of dressage-unsuitable horses are owned by people that don’t have the ability to train them nor the money to pay for training. I don’t understand why people what to make this sport harder than it is by trying to fit a square peg into a round hole.[/QUOTE]
While I agree with your post in theory… There are not many perfect horses, and some of the horses with perfect dressage conformation can’t move or don’t have the brain! I’ve seen more then a few that were just gorgeous standing still, then they moved, and it was a WTF moment:lol: Have a friend who had a Hanoverian mare - who was probably almost perfect - she was GORGEOUS. She brought her to an educational event, and the judge (both a DSHB and S judge AND a breeder and trainer) looked at her and his mouth fell open. He declared her to be one of the most beautiful mares he’s seen in a long time. Then she walked. And trotted. And cantered. And no more gushing - she just couldn’t move, which is how my friend was able to afford a mare with perfect conformation - she was never going to be competitive.
And others who have some really funky conformation, and do really well! There is one Dutch WB stallion (not naming names) that throws some really quirky conformation, but they can MOVE. Especially in the canter. So when you see them just standing, it is a bit puzzling, this is an upper level dressage horse?
And of course, there is the brain issue - some of them are athletically capable, but the brain just can’t handle dressage - and I’ve seen a LOT of those fancy Warmbloods who did great at Training and First Level. Then the minute they are asked to be a bit more contained, they become explosive.
And there are a lot of variations in conformational deficiencies - for example, slightly straight hind leg, or slightly upright shoulder, or slightly long loin are different then post legged or other more significant issues. Toeing in, not such a huge issue. Slightly bench kneed, not such a huge issue. I ride a mare who is a bit long in the loin, and a bit short in the hip - you’d guess she could never piaffe or passage, but 2 sessions with an in-hand expert - he was just amazed at how easy it was for her. Of course, she is held back by her rider :lol:
Then there is financial reality - most of us can’t afford to buy the “perfect” dressage horse. And some of us aren’t capable of riding such a horse. And some of us just love the type or breed we ride - and are willing to overlook that it may be a bit harder for our horse. As ExVet points out - if the horse’s brain is in the right place, and the rider is capable, it is very rewarding to take your horse up the levels, even if they aren’t “perfect”.
And some conformational issues get better with correct training - I’ve seen horses with upside down necks, low set necks, etc that improved dramatically with good riding. Weaker loins or backs that improved with good muscling.
To the OP - things I would most worry about are crooked legs, post legged behind, very weak loin/back, or tiny feet in relation to the size of the body. Or, and really long pasterns. These horses may be able to do dressage, but keeping them sound will be a struggle, and getting them to lift their back and start to develop collection will be a struggle.