i always love piccies of Pinto
were i you, i would try very hard to teach him to lunge correctly/calmly. do it in VERY SMALL STEPS. i mean, take him out & get him to circle on the lunge once or twice CALMLY, then praise & end the session! build up on that
slowly, so that he equates "calm circles on the lunge" with "reward".
this will translate to your under saddle work.
have you read Dr. Andrew McLean's book "The Truth About Horses"???
it would REALLY be beneficial for you i think.
you have a lovely pone - and i'm envious of his exuberance!!!! :lol: