When I was about 12 or 13, I had to plow in the field with a mule. At the end of the day, when the time came to go to the barn and eat, the mule would pick up speed as I plowed the row going toward the barn. When I made him turn to plow another row, he would plod along until we, once again, turned back toward the barn then he would, once again, shift into high gear.
I plowed one year using a horse but I preferred the mule. A horse has to go too fast in order to pull the plow and it is easier for a kid to get a broken rib if the plow hits a root. A mule can pull the plow just walking along slow and easy. Except for the danger when hooking the trace chains to the single tree (mules will kick), mules are better for old men and kids.
El Condor Pasa:
PS ... thank you for the YouTube links.