I haven't ever unwound it. It's just a normal length. I wouldn't say it was real sturdy. It's not like the heavy duty one I have, it's like the average ones I have.
I am almost sure it would, but I don't know that for sure. I have never had anything to do with those horses. It can adjust for different sizes. I had another one like it that I had on my quarter horse and appaloosa. My appaloosa was pretty large.