Nuzzling Muzzles asked for some pointers for ponying horses....
And while I have been ponying my multitude of horses, I keep trying to think of helpful pointers for her...
And I got nuthin much.
Basically, if a horse leads well and will pony in an arena...They will pony outside. The lady that told her, 'They tend to stick together' was correct. That doesn't mean that a horse that gets loose that it won't head for the high country....generally towards home or the trailer if they have a good idea where that is.
I guess the best thing to do til you know what they are going to do is just keep their head close to your leg, your leadrope short and make them mind. That means; no chewing or biting on you, your tack or the other horse. Don't let them push the horse you are riding around either. Make them mind just as you would if you were leading them on foot. As they get used to it and you get comfortable with it, you can pay out more lead rope and just let them walk, trot and even lope beside you. :-)
I think my older horses enjoy being ponied because they know it's a 'light' day and the young ones are most definitely enjoying being ponied around the desert. They are pretty quick to figure out that it is way more interesting going along than it is going round and round in a pen. ;-)
If anybody has anything more helpful than that, please leave it in the comments.