build yourself a small pond about the size of a living room and raise fatheads and golden shiners in that pond and once a week or so net a few hunded of them and put them in your bass pond. My good freinds grandparents have a series of 3 ponds on their property,, the smallest first pond they raise fatheads, the second and slightly bigger pond they raise shiners and the third and by far the biggest pond they have bass bluegills and channel cats along with some sort of giant fish they call "chinese amora" not sure if thats the real name for them but that is what they call them. this system worked great for 50 years while his grandfather was alive and now that he's gone no one nets the minnows to put in the big pond but its been 5 years and the small ponds are still so full of shiners and fatheads you can't even see to the bottom in some spots.