Longeing is a skill that sadly is misconstrued I think. The point is not to chase a horse round and round to wear it out, but rather to educate the horse--to the voice, learning transitions (within a gait too). I freelonge in the roundpen and horses quickly become very focused and obedient. I teach young kids and the horses are steady so they can learn the basics properly. I also do not let the horse turn in to me when I ask for halt (what is the point of that?). I go to them, stroke their their head, than proceed on. I very quickly get what some call "join up" in that when the session is over, I ask them to follow me, both directions, (no leadline). Correct positioning and clear body language is important.