A flat to me is an area that gets relatively level or a slight slope which is common. I have most luck on the more shallow flats, say 5 to 10 foot. There is another one that the old creek bed splits and formed a flat the size of a city block. 20' on the flat surrounded by 35' of water on two sides. This is also very productive sometimes. I like the flats I want to fish to have a little drop and defined edge. This gives them somewhere to scurry off too when the weather changes or they get spooked. Sometimes those edge areas really hold the most fish. Hope this Rooster.