I do believe there can be a “genetic” predisposition. Just like some buck, rear, bolt, etc can be found in family lines. But I believe most can be helped if they have a proper “CRJM” early and they learn that the behavior is not worth the consequence.
I also believe that these types of horses are not the best for a newbie hunter to be bringing out. There is SO much sensory overload that it is easy to miss the early warning signs and have a disaster averted.
I do agree that hunting is group riding on steroids. It is not something that can be easily recreated for “training” purposes, so some training does happen in the hunt field.
If early warning signs are given, what have you all found to be effective?
My retired hunter had someone use him as their brakes his first season out. I had green drool on the back of my hunt coat from that horse literally almost riding my horse. My hunter didn’t kick out, but was for obvious reasons concerned about horses behind him that were too close, or horses that came up faster than the pace.
I would feel him “bunch up” and lift his hip and he would turn an eye to the offender. My response to the bunching was to apply my leg and have his butt be away from the target. This usually worked. If his nerves were a bit raw from continued harassment and he lifted a hip, he got a solid wack with the crop and a scolding.
If it progressed to the crop, I would usually get an apology from the person crowding saying “oh, it was my Dobbins fault. We were too close and he nipped your horse.” I replied, “my horse isn’t allowed to even raise a hip at you and Dobbin, no matter the offense taken.”
I have seen people’s horses kick and those people being told they have had their warning, one more and the horse would be excused. This was done in the heat of the moment, an was hard on everyone to witness. It would be great if the Master could do it in private, but for some people public embarrassment is the only thing that hits home.