There are four general plans, or methods of plowing fields. These are: (1) to plow from one side of a field to the other; (2) to plow around the field; (3) to plow a field in lands; and (4) to start the plowing in the center of the field.
If we agree that quality of plowing is subject to different criteria at different times and in different fields, then perhaps the most important thing to consider is control. How effectively can I plow to attain my desired field condition based on my choice of plow? The old time plow manufacturers understood this. At one time there were specific moldboards available for every imaginable soil type and condition.
All other aspects being equal, the primary difference in plowing, comfortably, with a single horse is that the animal walks on unplowed ground immediately adjacent to the previous furrow, rather than in the furrow. This will cause the point of draft at the shoulder to be somewhat higher and will dictate hitching longer and/or higher than with the animal walking down 5 to 8 inches lower in the furrow.