What is the mouthpiece of the bit(s)?
I think it would really help you to try to understand what a passive hand is. A passive hand neither gives nor takes. When the horse roots, you stay there, passively. It takes a fair amount of core strength and balance. When the horse inverts, you hopefully have a good enough seat to stay out of the pit his back is making and continue to maintain a passive hand. Dressage horses are not supposed to give to the bit. We want them to chase the bit out. Picture a carrot in your hand under his mouth and you are backing up and he is chasing it forward.
Ideally you always have the feeing that your hand is slightly pushing forward, as if the reins were sticks. At the same time, your focus needs to be on encouraging the back to come up and the hind end to step under because here’s the thing - unless BOTH of those things happen, the horse CANNOT reach out and chase the bit. If he comes to the bit and “gives” with a hollow back and unengaged hind end, you are doing saddleseat
or simply bad dressage.
I don’t think the horse is going around thinking about how to evade you. I don’t think he is spending his time trying to figure out how to “evade contact”. He’s a horse, he has never read a dressage book, he has no concept of what you “want” him to do and no concept of what contact is. Contact is a human idea. He is neither smart for not figuring it out nor stupid. You have to be a good enough rider to encourage him to explore what the end of the rein is and see that it feels good to bring his body into that posture. It is a biomechanical process and it is your job to bring his body into the seeking posture that results in the horse being “on the bit”. As you are finding out, no amount of more leg and more hand will make him seek the bit.
A LOT of horses will, and do, tolerate being pushed at a hand that is pulling back, and consequently give to the bit. Why do horses do this? Because they are trying to move away from pain. Some of them simply hang on the bit and on the rein, those are the ones who move into/push at pain. There is a long explanation of why some horses do that, it has to do with being a prey animal. You may simply have a horse who is not willing to play either one of those games to save himself. Since we cannot see him, we don’t know. We also really cannot learn much from watching people who ride their horses onto the end of the rein because when it is done well, they look like they are doing nothing at all.
The first time I encountered a horse like this I decided I was either going to learn something or die trying :lol: I took my horse to a true FEI level trainer (someone who has shown/trained internationally at the FEI levels and has trained many, many horse thru GP and whose students are very successful) and said HELP ME! I DON’T GET THIS! WHAT IS THIS HORSE DOING?!!! It has been (hindsight is always 20/20) one of the best things that ever happened to me. A lot of things that I had been taught in the past came together for me; a lot of concepts meshed, I learned how to ride a difficult horse forward and onto the end of the rein. If I had not cried UNCLE I would have probably sold that very talented horse and still, to this day, think that horses get on the bit by me taking contact rather than them making contact.
Or… maybe you are doing everything perfectly and your horse just really does not find his bit comfortable.
As a byside, if you focus on the horses back and hindend it is hard to go wrong. A young horse who is lacking in strength in the back will often go BTV, he finds it easier to balance there. IMO and IME IF his topline is weak, and in the moments that he is BTV his back is still up and swinging you have nothing to worry about. As he gets stronger he will come up and chase the bit out. He will not “learn to evade contact”, again, he doesn’t know what contact is. And if we all agree that contact should feel good to the horse, and he should want to seek it, then we agree that he will be happy to get there as soon as he can, when he can.
And just a random thought - why would a horse “evade contact” unless we were making it something uncomfortable? I find that horses evade engaging their hind ends, particularly if their backs are not up and swinging, because it is hard work. But contact is a side effect of the back up and the hind end under, so when you have those things working, it is easy for the horse to reach out onto the rein and they do it comfortably.
So… what is your horses back doing? What does he do when you put your leg on him? What have you done to teach him that the leg means go forward with engagement? What are his withers doing? Maybe these are the questions we should be asking when a horse appears to be “evading” contact.
Sorry for the book.