Garth and John Ilett in Perth, Australia developed a now famous two-hydrofoil system for the moth with active flap control for the main foil via a surface sensor. The hydrofoil generates maximum lift when the boat is in the water and the flap automatically reduces the lift as the boat rises out of the water.

John's company Fastacraft was the first to produce a commercially available International Moth. Fastacraft's Prowler design features a carbon-fiber hull, inverted "T" foils on the centerboard and rudder and can reach speeds of over 27 knots. The boat can become foil borne in as little as six knots of breeze with an experienced sailor at the helm.