Potting is a method of dropping baited cages, with a hole in one side, positioned so that once the fish or crustacean has entered they cannot leave. Pots can either be attached together and dropped in a line with a buoy either side, or can be dropped individually with a buoy tied to each one, to mark their position. The bait fishermen will use for potting can be either, small by-catch fish with little commercial value, or fish frames. Lobsters and crabs are often caught by potting. Lobsters prefer smelly old bait! – so rotting fish frames are best for them. Crabs prefer fresh bait such as small by-catch fish or fresh frames.