Named 'cos Ed Maskell made it!

Here the idea is to pick up your lance at the canter from out of a barrel, then to knock the ball from off the bull and canter past dropping your lance into a second barrel as you go. Trot or walk if you prefer but cantering gains maximum marks.

Other obstacles:
Transition from canter to walk and crossing a bridge before picking up canter to encircle three barrels in a very tight space.