BE90 - A-C Serpentine of three loops
Use your corner before A to balance your horse and start the first loop at A.
Make sure all three loops are of equal size so practice in an arena when you can so you know exactly which lines to ride.
You should cross the centre line at 13.3 m and 26.6m with X being in the centre of the second loop.
You need to look ahead around your loops throughout the exercise keeping yourself balanced therefore helping your horse to be balanced.
Remember not to use your corners after A and before C.