Actually, you know what really drove it home for me? My problem has always been strikes, and so a few yudansha that I had lots of experience and comfort with started standing still when I would strike them, so I could see that I was veering waaayyy off.
This was a great tactic because it was foregrounded with a lot of work on things I do feel comfortable with, like breakfalls. I felt confident and comfortable with these guys, and knew they had my progress in mind.
It was also really gratifying to hit them once I got it! (haha)
This would have been a really combative and mean thing to do if a comfort level hadn't been reached, if I didn't know that they take me seriously. Kevin's advice about receptivity makes a lot of sense from this side of the fence.