Get a minnow trap, its like a wire round thing that comes apart in the middle the fish can swim in but not out they r not expensive you you can get them from any tackle shop just as for a minnow trap. You can put bait in it and just put a string to a clip thats on it throw it out and tie it to a tree and leave it. You come back in a couple hours and you'll probably have a few little fish. Me and my dad use potted meat in our trap for regular bullhead minnow's for flounder fishing. Just open the can and sit it in there.