Natural horseman

I know that bucking is a horse’s response to fear or pain. Yelling or hitting a horse after he bucks only reinforces the pain that caused the bucking. I know that Zum’s bucking is very dangerous to me and he can and has hurt me seriously. I could let someone else ride Zum but I have to find a natural horseman who understands that I don’t want Zum to be kicked, whipped or punished. I have watched conventional trainers do this to Zum in the past and this only makes Zum angry and rebellious. Where will I find a natural horseman who could ride Zum?