Turn out I have a client who will be absent over the summer and basically want to let the lawn die off. He is pre paying for bi-weekly mowings. My plan is to mow it high 3.5" up until June and then mow it at over 4" just before the summer heat. All mulch mowings. I'm going to do 3 test patches of 10' x 10' in different areas of the lawn to test how well core aeration will help the lawn become more drought tolerant. Yes no one will water it except for the rain. Will aeration make difference? Any input?