I plowed a small section of field a couple weeks back, was a bit wet and hard to plow, it didn't flip over perfectly. I have now disked it about 6 times. I could keep going and going, but there are clumps of grass that just won't dissapear. I can do it by hand, but there MUST be a better way, right? I'm using a 50-60 pound weight on the disker (small tractor, 9N). I'm trying to think of a heavier weight, I just have nothing around except that rock, rocks are difficult to attach. Hope to hear any ideas!