Chocklett's Polar Changer The Polar Changer is a highly articulated, impressionistic baitfish streamer used to target many freshwater and saltwater gamefish species. This version has two hooks, a #4/0 up front and smaller #4 trailer hook in the tail. The fly is tied predominantly with "Polar Fiber" which is a sensitive, ultra-lightweight synthetic fiber that causes the fly to constantly "breathe" and undulate in the water These are usually about 4" long and have 7 segments