What is the primary reason for sacking out a horse?

Sacking out a horse is primarily done to prepare it for saddling. This process involves desensitizing the horse to various objects, such as saddles and saddle pads, ensuring that the horse becomes accustomed to the sensation of these items being placed on its body. By gradually introducing the horse to the equipment, handlers help the animal learn to accept being saddled without fear or resistance. This is crucial in developing a horse that is calm and cooperative when being mounted or ridden.

This technique not only makes the saddling process smoother but also enhances the overall riding experience, reducing anxiety for both the horse and the rider. Thus, the main aim of sacking out is to ensure the horse is well-prepared and comfortable with the equipment it will encounter during training or riding activities.