knowing your location would be of great help, In Missouri, the weather is changing, IE the fish will start to move following the shad, so I just start scanning points, mouths of coves, find a big ball of shad and work it, sometimes side works better than down, but down scan has sure help me find a lot of brush and trees, find the structure, natural or man made fish will not be to far from there, then search out the deep water to shallow water, the fish will probably travel back and forth, now once you find the fish and catch a couple or four they will move on you , so circle around and do it all over again.