A teaching aid is provided for use in swim training. The teaching aid comprises a unitary body that is approximately U-shaped. The body defines an opening adapted to receive a torso of a swimmer. The body further comprises a pair of end portions, each of which is tapered to a rounded tip. The end portions further comprise inward-facing fins. A method using a teaching aid for a variety of swimming techniques including front kick, back kick, starfish, doggy paddle, front crawl, back crawl, elementary back, breaststroke, dolphin kick and eggbeater kick is also provided. A method of using the teaching aid and a method of providing instructions to a swimmer to use the teaching aid are also provided.