Hi! I’m an English rider who is struggling with correct toe and stirrup position. When I post the trot or sit with a forward seat in the canter, my toes turn outward away from the horse which causes my stirrups to slip down from the ball of my foot toward my sole/heel. It happens on any horse I ride, in any saddle, all lengths of stirrups. I find that it happens every time I attempt to sink my body weight down into my heels.

My trainer just tells me to turn my foot inward and I’m trying to do that by keeping more contact with my lower leg and positioning my leg slightly behind the girth, but my stirrup always slips backward onto the sole of my foot within a few minutes.

Any advice on why this is happening and how to stop it?