The CIA skipping worm is designed for skipping under brush and docks. It has a flat bottom and a more rounded top with a thin section just before the tail. If you twitch the worm it will drift with side to side action but a few inches under the water. The worm is designed to be cast and skipped under vegetation overhanging the water and twitch and reel it out from there. This allows you further fishing area to better cover the water.