Originally Posted by Cascara

I personally woudn't suggest lunging at all, it is far to damaging to young tendons. If you have to then use the largest possible circle very very gradual or lunge with double reins in walk on straight edges then turn so that no pressure is put on the young legs, they shouldn't be bandaged either so the risk of injury is very great. Infact I would instead long rein from behind with someone leading him.