In smaller rivers such as the salt, beech fork and rolling fork that I fish if there's a strong current but water doesn't look like chocolate milk and there's no debris floating everywhere I'll be fishing for sure. I look for the inlet and outlet creeks. Mostly I like to concentrate on current breaks whether it be log jams rock piles or pockets in the river on the outside of the main channel. I've had great days pulling out crappie and bass one after another. Fast moving water is probably my favorite way to fish a river. Especially during the white bass runs! I assume same goes for the big rivers but I don't fish them much.