No problem Yes its a lunge line. I think if they are worked regularly on a lunge line for direction and manners I think they will be fine. Young horses are usually not lunged for long periods, so bear that in mind. Until a horse is over 4-5 years old the leg bones are not fully matured.
So I should lunge the young ones in small periods like, the first two weeks of a month? And how long per lunge for the youngs and the mature?