A. I don’t know why you consider the copper roller to be cheating. Trainers frequently change bits to find the one that works best on a particular animal. Some horses work well in the same bit forever, while others respond better to having their bits varied from time to time. The object here is to create a soft, responsive mouth, and such mouths are usually associated with moistness which the copper will help promote. You don’t necessarily want this pony to get mouthy with the bit; you just want him to accept it responsively and not harden against it. If he chews the bit a little, it’s nothing to worry about unless he starts doing it excessively and constantly. If his mouth was dry and unresponsive before, it’s definitely encouraging that he’s becoming more actively responsive to that thing in his mouth.

You’re on the right track with your idea of using your legs to inspire this pony to become softer through the reins. That’s exactly how I would approach it. But I wouldn’t lengthen the reins to the point where I lose contact. I’d just soften the rein contact a bit and drive him into my hands with my legs and seat. I’m particularly big on lateral exercises. Use lots of leg yields, turns on the forehand, and shoulder-ins. Check out the following link for specific ideas.

Lateral Exercises

When you said you were going to lunge the pony with double reins, I assume you meant you were going to long rein/ground drive him. Make sure you know exactly what you’re doing before you attempt this. The extra length of long lines attached directly to the bit puts a tremendous amount of pressure on the horse’s mouth – MUCH more than riding-length reins. You could severely damage this pony’s mouth if you aren’t extremely careful in how you apply long reins.