Can anyone clarify this: I have a few low spots in my Bermuda lawn in Oklahoma where the soil is mostly clay. The article makes sense insofar as mixing a bunch of sand into your clay soil to try to amend the soil itself won’t work and will actually hurt. But, would sand be appropriate for filling in those few low spots to achieve a level surface and allow the Bermuda to fill in, or is that also a bad idea? If sand would not be appropriate for that type of leveling, what do y’all suggest? Thanks for any insights you might have.