We have now sat on Coco who was very well behaved and took it in his stride.  Probably due to the lungeing before hand to make sure he was as tired as possible. Now he is lungeing and long reining well and has been sat on, he has been turned away with Zac for the summer. He is only just three
so needs time to mature before doing more. He will come in again in the Autumn when we have finished the eventing season.