See any herring?

Fished MI this morning. Bust on the outgoing, no bait no fish. Left to check out the surf further south and didn't see any action. Went back to MI to check on the incoming. Was there 15 minutes or so, saw a few splashes, birds started to gather and in a matter of minutes all hell broke loose. First two fish were hickory shad and everything after were herring. Had to catch over a 100 in a few hours and left them biting. Tons of spearing which seemed to be what the herring are feeding on. Saw a guy there Tuesday hook a herring on a sabiki and a bass grabbed it. Got it to the wall and broke his line. Pretty cool sight. Lots of gannets diving a quarter mile or so off the beach on outgoing. Think bait and herring go outside during outgoing and come in with the warmer water during incoming. Either way it turned on like someone flipped a switch, you could have had as many herring as you wanted. I almost left without going back for the incoming and would have sworn there wasn't a herring in the river.