He is 8, I got him a little over 2 years ago unstarted. So he has been under saddle less then 2 years (Excluding time off for injuries & illnesses.)
I would say for the last 9 months, he has finally been able coordinate himself fairly regularly. Lol
I have not found spiral circles to be of much help. He is still entirely capable of cantering itty bitty circles on the forehand. Heck he can do it in counter canter. His strength is our enemy here. He's strong enough that he doesn't "need" to rock back to do it. It's very fustrating.