What is the proper way(s) to use a stud chain on a horse, assuming you are using it with a halter to lead the horse? I have seen it in person many ways, under the chin, over the bridge of the nose, and even around the poll and under the chin! Why are they used, other than obviously leading rambunctious unkempt horses that just 'CAN'T' behave otherwise. What is the best technique in using them, if any?
I understand the basics of them, but I have never had to use one, even on a young stud colt had to exercise for his owner. I have seen them in person on countless horses, and have seen them in magazines, books, and online on mares, geldings, colts, ect.