Attaching and Securing Hay Bale to Unroller

What happens here

The farmer stops the ATV and approaches a large round hay bale. He dismounts and positions the hay bale unroller. He then removes a metal pin from the unroller's spear and carefully aligns the spear with the center of the hay bale. Once aligned, he guides the spear through the bale and re-inserts the metal pin, using a sledgehammer to ensure it is firmly seated and secure. Finally, he operates the winch mechanism on the unroller to lift the hay bale completely off the ground, preparing it for transport.

Goal: Prepare hay bale for transport and unrolling.