- Sections where a large river narrows. Obviously, a narrow area is going to funnel herring as they move downstream and make them more vulnerable to bass. Usually, the downstream side of a narrows is the most productive.
- Shallow flats adjacent to deeper areas or navigational channels. Baitfish instinctively feel safer in shallow water. When they stray along the edges of flats, smallmouths in the deeper water will pounce on them. In a sense, the flats work against the herring, because the lack of depth serves to congregate them into a tight vertical area that doesn't deter aggressive bass. Often, flats are the best places to fish topwaters early in the morning and in late evening.
- Creek mouths where smaller streams empty into the rivers. Herring schools rest in the creek mouths and usually can be found there. Don't overlook man-made "creek mouths" such as storm-drain pipes and drainage ditches.
- Islands offshore in the main runs. The flats around island points, particularly on the upstream side, can hold bait-crashing smallmouths.