Way back in the 1980's I fished a few times with Captain Lee Wenger "The Saucey Tomato" Out of Sandusky Bay. He kept a bleach bottle on board that was covered with 3/8 holes I'd say they were, and it was weighted. He called it his chum bottle. Lee would stop at the fish cleaners and fill his gallon bottle with fish goop then he tied a rope to it and let it out just off the bottom. He would give it a shake now than then. We always did well on the perch. Lee was older back then so I am not sure what is up with him now. Very nice man. I am convinced his method works.