The Aids.
What Are the Aids?—The aids are the different means employed by the rider to convey his desires or intentions to the horse. (Notes d’Equitation.)
The Legs.
The Stirrups.—The stirrups should be so adjusted that the tread of the stirrup is level with the top of the heel when the rider is mounted and seated properly. When the stirrups are too long, as with the “fork seat,” the rider is unable to use his legs with strength and accuracy. With the stirrups too short the rider’s knees are too high, the seat is forced too far back and he is unable to sit down in the saddle; hence is less secure.
Position of the Foot in the Stirrup.—At least one-third of the foot should be inserted in the stirrup; the heel should be slightly lower than the toe and the ball of the foot should rest upon the tread. (Notes d’Equitation.)
The following are the uses to which the legs are put:
1. To produce the forward movement.
2. To range the haunches.
3. To bring the hind legs forward under the body.