Carl talks about the fact he rides without spurs or a whip even though he has to use them in competition and about how he has to work him in competition week.  He has to be very precise in the use of his leg while paying attention to Barney's relaxation.  He does half pass in the canter while being able to give and retake.  Carl works on regularity which is quite difficult with such a reactive horse. He demonstrates walk piaffe transitions while explaining how he does this.