I bought an aerator and ran it across the lawn, conservatively. Following up, I read lawn industry people saying holes every 2 inches might be a target number. Thats a lot. I can see it if they get paid once per year, but having the equipment I can run it at my pleasure and the recovery time is faster without tearing up the yard so much. The lawn is Burmuda in the sun and fescue in the shade areas. What would you suggest?