You only need a really thin layer of soil/compost over the seed. Easy way is like what MF283 said and use a plug areator after seeding. If looking at adding nutrients to the soil, check out compost teas. Once I build my spray rig this year I am going to try it. I have seen many lawns with it used and they look good.
Another option would be to look around at smaller farms and see if a farmer would rent out his manure spreader. It will take some adjusting and such, but it would do the job.
Another option would be to look around at smaller farms and see if a farmer would rent out his manure spreader. It will take some adjusting and such, but it would do the job.