Thanks for the advice Walkamile. Can you give me a really good explanation of a one rein stop? I think I know what you are talking about, but I want to make sure.
She is real good at dropping and spinning from her previous life as a team penner and reiner. Her owner passed about a year ago, and my friend has had her since, but does not trail ride. But my friend has known the mare since she was 2, so that is how I have all this information.
I think once the kinks get out, we can have a real good time.
It also goes by the names, yielding to the bit and disengaging of the hips.
What I did was at a stand still get the horse to laterally give to the bit first. Take the rein (let's say right rein) and bring it to your thigh (you can also go to hip or pommel on the saddle) and hold until the horse puts slack in the rein. Immediately release the rein. Do the same to the other side. What you eventually want him to do is as soon as you pick up the rein and start to remove the slack, he will immediately bring his head to your knee or just in front of it. He will get extremely light where you will barely feel any resistance.
Now practice at a walk. What he will do is as he brings his head to your knee, he will also cross his right back leg over the left back leg and all forward motion is stopped. Once this is automatic with lots of practice, do it at a trot.
This has saved me with Walka many times. Once he went to bolt after something up a tree started to screech at us, and I immediately raised the rein to my leg and BAM he disengaged and stood there waiting for me to tell him what to do. It basically shuts down that flight side of the brain and allows them to think again. If he gets too fast at his walk and I feel he's going to speed up even more, I shut him down and it calms everything down for us.
Just remember, if you miss the opportunity just before a take off (bolt), don't pull the horse over, just ride it out and sit back and breath. But if you feel your horse may take off, shut him down. If you were wrong, so what, gave him and you both time to regroup.
Most Natural Horse trainers demonstrate this tech. If you get RFD TV, watch one (Clint Anderson, Chris Cox , Dennis Reis), they'll explain it so much better than I can.