A customer if mine had sod put down about two years ago. Little maintenance was done and a lot of it has died off. To look at it now it looks like a babies head. Very thin, fine grass blades, and a light coat of thatch. She wants the lawn thick again. I dont imagine aeration is necessary, but I was thinking more along the lines of maual dethatching with some hand rakes and a moderate overseeding. What would be some ways I could put the seed down. I was thinking of a slit seeder, perhaps just spreading it with a spreader? She now has an irrigation system installed and can water at any time. The yard is probably only about 700 sq ft.