It raises the question, though, whether the benefits of core aeration are as great if you don't fertilize. I wonder if people have tried different methods on different patches of lawn and seen any real difference.
It is not necessary to fertilize to gain more from core than spike or slice... any method will help get nutrients down into the soil...
Core will work better as it has much LESS compaction than other methods and it brings micro-organisms to the top of the lawn ...
If you don't want to wait for the cores to break down you can use a chunk of chain link fence with a landscape timber attached as a drag to crumb the plugs as you go...
If you have a lot of hard clay you might also want to topdress with a little gypsum and if you need to tip the ph add a little lime with the mix... :smile:KennyV
PS... any aeration is going to be better than never aerating....