shad eat plankton and other microscopic organisms , if the shad are there skippies will be too for they eat shad and catfish wont be far behind due to they eat both shad and skippies . plankton feed on sunlight they are formed thru photosynthesis , if you provide artificial sunlight you can mass produce plankton which will intern draw in the bait fish and along the same course catfish . what lighting system do i need that will run on a 12 volt battery to provide artificial sunlight ? would flouresant lights do this ? and if so , are there any that are submersible in water ? i want a method of increaseing the bait fish in an area around the bottom of my boat . bugs and other insects are drawn to the light , perhaps plankton which are basicaly water bugs are drawn the same way .