10/2/2012 10:10 PM
We've used this method with mixed results. Topdressing first works great IF the weather cooperates. Picking up the cores over the sand can be difficult after a rain shower. Our aerification dates are set far in advance, so we stick to it despite the weather forecast. If there is a chance of rain, we will cleanup the cores, then topdress. However, I agree that topdressing first with sunny dry weather provides the best finished product bar none.