Altering the Stirrups
To alter the left stirrup, first take the reins in your right hand. With
your left hand take hold of the spare end of the leather. Then, with
your thumb on top of the
buckle, steer the tongue of the buckle with the first
finger, the other three fingers continuing to hold spare end of the
leather. Disengage the
tongue and guide it into the required hole. Move the
buckle up close to the bar of the saddle by pulling
down on the inside of the leather, then replace.
You should never remove your foot from the stirrup.
You should get into the habit of changing the length
of your stirrups by feel, without looking down.