I've probably asked this before, but do you know in advance which tests will be on the ride so you know if you have to practice "sidepassing through a puddle" or "stopping half over a log"?
I don't know if Cyn sidepasses at all ;~D
As far as I know, you never know what obstacles they're gonna throw at you. The fact that you can't "cheat" and practice is part of it. You horse is supposed to have good basic skills and control so he'll do whatever is asked. They don't ask you to do anything where you could get hurt though.