Unroll Hay Bale with ATV

What happens here

The farmer then hitches a Greg Judy bale unroller to a red Honda Rubicon ATV. He backs the ATV and unroller up to the hay bale, positions the unroller, and uses a hammer to secure the bale in place by driving a pin through its center. He then starts driving the ATV forward, causing the bale to unroll steadily along a line, distributing hay for the waiting cattle. He has to dismount and adjust the bale with the hammer again, and then continues unrolling.

Goal: Distribute hay to cattle in a controlled manner