I started taking the bait I don't use and I can't keep alive and running it through a meat grinder, and freezing it in old milk jugs. Then I take the jug out fishing with me, knock some holes in it as it thaws, and tie a rope to the handle, hanging it over the side of the boat as I drift. I use a window weight to be sure it sinks, if it is not filled all the way. My own version of the chum bucket, and gets rid of the old rotten bait. Just can't let my wife find the frozen jugs in the freezer. Half gallons work better.