After doing a lot of approach and retreat all last week, Koda is doing much better about not running off when I enter the pen--he now walks up to me. Over the weekend, I turned him out to pasture and didn't have any trouble with him running off when it was time to go back in the pen. I'm really pleased with his progress.
I've been doing a lot of desensitizing because he seemed a little jumpy. He's responding well to my cues. We're doing a lot of circling and figure 8s. He hopped a little bit the first day I loped him, but he didn't seem too serious about it; it was more like he was checking to see what I would do if he hopped. I just ignored it and kept asking for a lope and he settled down.
I've also started working on the passenger game at a lope. I feel like he's not relaxed about loping, particularly when circling to the right. Asking him to just lope without giving any other cues (i.e., no steering) gives him time to settle into the lope and relax with it. It also helps him to understand that he needs to maintain that lope (not trot and not break into a gallop). I did this last fall with him and it seemed to help eliminate his desire to crow-hop. Once he relaxes, it's much easier to find success when I begin to add in other cues.
My goal is that his owner will be able to ride him this summer without any hopping going on. Keeping my fingers crossed!