A zonker is a fly made from a strip of fur. The strips are known as zonker strips and they have the hide attached. Once waterlogged, this softens and create a fly with bulk that pulsates when retrieved. It's great for larger flies, such as streamers and pike fly patterns. Dan Blayford, an American fly fishermen created the Zonker fly, this is a minnow shaped imitation of a small baitfish. Today this is one of the classic patterns used by fly fishermen to imitate small baitfish.