So things have been going far too well with the yielding and then walk/canter. Today we were getting more impulsion and he was getting the idea of using his quarters under him properly. There was a rug hanging on the gates at C which we'd passed so many times I couldn't tell you and as we went by it thîs time his eyes popped out, his ears pointed out the Danger Rug and he shot sideways. It took four attempts to get him to go past, and this was all in the last five minutes of the lesson. Pillock!