Using a disc harrow would be a HUGE mistake. They have cupped discs to bring soil UP, not down, and that is what you want. You get some leveling with a disc harrow, but you end up picking rocks after every pass to get the job done.
I HATE PICKING ROCKS!
When I level fields, I land plow to make the soil as fluffy as deep as I can go (plow depth), then drag the biggest log I can across the field. The bigger, the more weight it has, and the longer, the flatter the field will be. The log also works well because it it is rounded so it pushes rocks down into the fluffed up soil (that is why you land plow as deep as you can).
I am using a 24 foot, 24 inch on the butt log in this picture, but I had the tractor (skidder) to do it. Just adjust the log size to what you can pull with what you got. A person can typically get a log free as well...free is betterer! (LOL)
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