Abstract: An integral foil for a surf craft fin comprising: a base portion extending in generally planar fashion between a base edge and a transitional edge spaced from the base edge; a foil portion extending in a generally planar fashion at an angle to the base portion from the transitional edge of the base portion to an intermediate edge spaced from the transitional edge; a tip portion extending in a generally planar fashion substantially parallel to the base portion from the intermediate edge of the foil portion; fastening means for fastening the surf craft fin to a surf craft having a floating plane; and wherein the base portion, foil portion and tip portion are of an integral and coextensive form.