He has alot of hock and knee, which isnt desirable. The jog looks off to me, like every few stride he looks like he is walking for a few steps. The lope he lacks forward motion, he "drags" himself and your trainer seems to know it, perhaps it just looks like sloppy legs but your trainer looks to be spurring him with every stride. Every couple strides at the lope he leaps forward, and he moves better at a faster pace. He has way too much knee to go as slow as some other horses. He looks MUCH better as a HUS horse. His turn-arounds are sloppy, the horse is being lazy and shifting his weight to the outside (hence he is pivoting on the wrong foot), which with the added lack of forward motion he stepped out of the first and last pivot. He has high withers, short back, downhill, big muzzle. He would make a nice novice, open, or a 4h level all arounder.