Amateur hour again. I have a 2 foot soil moisture probe and brown probe along with my TDR, soil coring ability to 4 feet, and turf profiling tools. I leave the shovels to the amateurs (you) who like to pretend they know something about managing soils and irrigation. @silicuda Water early in the morning, trying to get all your irrigation complete before 9-10am. How do you help your turf develop deep roots? Determine the correct amount water to apply at the frequency and depth in the soil it is needed at. If you have significant compaction or a confining layer, deal with it.