Too many bait fish???

Anyone ever been in a situation like this?
Went night fishing on Lake Raystown here in PA.
My Humminbird was blowin up like I have never seen before with fish. I'm talking top to bottom on the screen and from the surface to 12-15 FOW.
I proceeded to put my floating light in the water and to my amazement, the fish I was seeing on the sonar, were all bait fish.
Even after a started trolling, the damned things were jumpin along side the boat like dolphins following a ship.
I fished for 7 hours and never got a single nibble. All I kept thinking was, there is no way anything is going after my lure with that many bait fish available. Anyone ever experience this??