The thing I didn't like about what was going on here is that the OP was trying to make a deadline for a show. I am completely non-supportive of schedules and time frames and deadlines for horses. Puts too much pressure on horse and human and often times leads to steps being skipped, which ALWAYS catch up to you.
I am NOT trying to make a deadline for a show. I am in my last year of 4-H, and I am OBLIGATED to take my project horse (Scout) to this show only, my club's Roundup. If I had my druthers, I wouldn't be showing at a canter class anyway, but due to my age, I am also obligated to canter in ridden classes at 4-H shows. This doesn't make any sense to me either. I am sorry if I came across like I'm trying to make a deadline, but I am not at all skipping steps. If he canters at all tomorrow, awesome. I just rode Scout this morning, and we had beautiful, balanced canter departs on correct leads.
This "function" is not at all a "show" as I think it was understood on the post. It's all in fun, no pressure to have anything any way. The best way I can describe this thing is a gathering of my 4-H club members and families, and there are going to be some classes, some good food, and some horsin' around. I am treating all of my work with Scout as though there was no "show" at all, and allowing him to progress at his own pace, with no gadgets or anything else wacky to force him to progress at my pace.
I know that the system is wacky, and I hope I clarified my position and my expectations. My intent in asking for advice was not to aid me in meeting my deadline, but to get some ideas for how to deal with a "glitch" that I have never dealt with before on a green horse.