Has anyone tried to use a thin layer (1/2" to 3/4") of compost underneath sod? I have heard that this does really well - less watering, better turf vigor, sod takes hold faster, etc.. Probably depends alot on the quality of compost. I am thinking of trying this around here and seeing how well it works. From my figures, I think it would be cost efficient for the landscaper ($0.60~$0.80 per square yard). I would appreciate anyone's comments on this.