disks are sometimes good and bad. they work the best when your soil is plowed and or tilled. one thing about a disk though, is when the outside disk goes through the soil, it tends to "berm" it up. i would much prefer to run my moldboard plow through the soil, then hit it with the cultivators after giving the soil a few days to dry out. if you dont have that kind of time, moldboard plow it, then hit it with a Tiller. it will be powder.