Demonstrate Plowing Without Gravel Shoes (Problem)

What happens here

After a snow melt, the operator explains that the issue with plowing a gravel driveway without proper adjustment is that a flat-lying plow blade will push all the gravel to the end of the driveway, leaving bare dirt in spots. To demonstrate this, he removes the gravel shoes from the plow and makes two passes over the gravel driveway with the blade fully down. This quickly gouges up the gravel and dirt, highlighting the problem.

Goal: The operator explains the function of gravel shoes and then demonstrates plowing without them, showing how it scrapes up the gravel driveway.