I have aerated and over-seeded many yards and had great results but the job i will be doing this fall will need much more. The property is 3/4 of and acre. The yard has very little decent grass. My main concern is it is 99.99999 percent shaded. The property is covered in very large mature trees. Under the canopies there is little to no grass. I am going to get the soil tested but i am the areas that are bare have very little good soil. I have never slit seeded and not sure if that is the route i should go. Any help would be appreciated.