I asked the question, now I know. Thank you for the demonstrations.
I can see the hopping. It is the crow bit that confuses.
Guys, I am not, repeat not, showing my mare Delta any of those videos.
If she gets the idea that she can do that to me I am done for. SHe would have me off for sure. She has the butt of a cart horse.
But maybe, if you Guys did not allow your horses any room to move the neck then the horse could not misbehave.
My Delta gets enough rein to do the job we have in mind at the time, then once she's done it, I take the length of rein back. She gets enough rein and that's all. She's allowed to stretch down once in a while - then back up comes that head - I can tell from her ears what's she's thinking.
I even decide how long a stride she takes through the reins.
Control the head and neck, you have the horse. Where ever the head goes, the horse has to follow.
There's more to this Western way of riding than I first thought.