Ok, so I have tried the roller, and as said above it really didn't make much of a difference. Due to the fact that the lawn isn't very large, I feel that I could top dress by hand, and probably use a hand aerator(not afraid to work hard to keep from spending too much money). I am going to be making around $2000 here in the July month, So i may use some of that money to invest in this equipment and top dress. What compost or top dressing material could I buy at Lowes or Home Depot? Could somebody also give me sort of an all around guide for the actual top dressing process? There hasn't been much rain here in Iowa, so I feel like I would have to water a lot during this whole process.