We used to pull a steel bed mattress spring. We have since gotten less hillbilly and went to a chain link fence with a hunk of metal.
A spring box with no weight is what we used to tease the neighbors with. They heard of a half a brain but couldn’t use it If handed to them.
Use the brain, it’s simple. Weight is needed or you have a poop drag for manure. Dragging a box spring with no weight won’t do what u need lol. Makes me re think of my old neighbors. Don’t be the neighbors who came up with a new shitty idea. Keep it simple