I have a yard, oh 2000 ft2, that looks like complete crap. Its fairly new construction, so cheap sod on sub-soil in the front, and seeded in the back. I picked up the yard last year, and started applying 8-3-8 w/Fe chicken poo fertilizer and spot treated with 2,4-D. The front had to be mowed once for every 2 backyard mows. However, the front is relatively thick, and had no weeds, pretty good considering the two vacant lots on either side. The fenced in backyard grew well, but was thinner (as it was seeded) and is spotted courtesy of the dog. This spring, I went to do my rake out, and a large majority of the lawn is just thatch. As are most of the neighbors. The soil test she had done just before I came on last year has <3%OM and poor fertility ratings. I am getting another one done next week. My thinking on this lawn is a heavy dethatch, aeration, over seeding and top dressing of compost. I have never top dressed before, what is a good amount? I will also be doing via the old-school wheel barrow and shovel method. My guess was 3 yards, spread about .5" thick. Am I off my rockers? If this isn't a good idea, what else should I do? Gypsum as opposed to compost, or both? CTs aren't really possible as this is the only yard of its type, and all my other customers have decided to stick with grasscrack.