I prefer tube flies for pike. I use a short shank 2/0 hook. I tie the tubes so that they have to be used in groups of two and they vary in length from 2 to 3 inches so the overall fly length is 4 to 6 inches. the usual minnow flies all seem to work for me, just tied up on the tube so that you can hide a pike leader and the short shank hook helps keep them hooked.