We saw images like those, too, yesterday. Huge schools moving and swirling around. I was fishing two poles with jig/ minnow. My biggest fish came over the side of the boat and I thought she had snagged my other line in the fight. But, no! She had both of my jigs in her mouth and the one I brought her in with was buried inside the top of her mouth. 13 " fish ! Beautiful day on the lake.