I have noticed a LOT of questions about the technique of the "One Rein Stop" so I thought I would post some videos that demonstrate how to teach and apply this "Emergency Brake".
(I would of made it a Sticky, but I wasn't sure how... if someone can do that, PLEASE do!)
This first video is a little lovey-dovey, but the information is great and the technique is applied very clearly.
Another good video, demonstrates the stop clearly, she is adamant about yielding the hindquarters.
This guy is VERY informative! GREAT example! Long video, but a must watch and learn! If you only watch one video, let it be this one! Actual spooking horse at the end to show you what it truely looks like.
(Disclaimer- IMO, the woman at the end could have executed the stop a little better, however it is more true to life by showing when applied the first times, it is not going to be picture perfect like in practice!)
This video is fully of great information, his technique is a little different, more adapt to the people that may be in a situation where spinning a circle is not an option for an emergency stop. It's basically a step-two method once the horse has the hang of the idea.
This is one step past the stop, riding with one rein, also packed with great info. Even if this isn't something your interested in trying, watch the video for the information.
For those of you wondering how to teach a horse to flex (because the one rein stop sort of hinges on this whole concept!) this video is very simple but shows the result you are looking for.
(Note: If you have a stall like shown, back the horse into the corner and pull the head around until the horse "gives to the pressure" is the goal. The corner is an easy way to keep the horse from moving his back end away. If you are out in the open, stand by the girth of the horse, one hand on his withers and pull the horses head toward you. He is probably going to walk in circles for a minute, just follow around with him (WATCH YOU TOES!) As soon as the horse stops and gives even slightly to the pressure, release the pulling hand. Reward and continue. As always, teach to both sides.)
The second training step after flexing is yielding. This demonstrates a perfect hind yield w/ back legs crossing. You don't have to use the training stick, if you prefer, the end of the lead rope works just as well. (More than one way to skin a cat!) Forequarter yield needs some work in video, but you can get the idea. Forequarter yield is not neccessary for the one rein stop, but good for a horse to know. If you think "My horse doesn't run away, he bucks!" Here is your video!
I'm sorry this is horribly long! I feel it is a very important subject!