creating and carrying the sport of Hydrofoil Kiteboarding from the Island of Maui, Haiku, North Shore to the rest of the world from 1999 to 2014.... In 2009 an Australian Inventor Brett Curtis built and rode the first paddle-in or prone hydrofoil. He posted photos on surfing forums Swaylocks and RealSurf of a friend Alex Budlevski riding the foils in 2013, 3 years before Kai Lenny made surfing hydrofoils famous. Foils are used on wind-surfboards through design development from Neil Pryde Maui, inventors of hydrofoil sailing "windsurfing" boards. Using a moderately sized sail, a foil windboard can achieve speeds over 6 knots faster than the apparent wind. With advancements in hydrofoil design the energy required to stay on foil was reduced to levels achievable by human power alone. Kai Lenny pioneered a technique now called "pumping" in which the rider shifts their weight over the axis of rotation, driving the foil through the water column which generates lift. Electric-powered hydrofoil surfboard In 2009, professors Jakob Kuttenkeuler and Stefan Hallström, from the KTH Royal Institute of Technology, Stockholm, Sweden, published their Evolo project. Evolo was a vehicle invented, designed and built by 15 masters students studying Naval Architecture and Lightweight Structures, who received an assignment from the two professors which combined an electric motor with a hydrofoil to create a personal watercraft that was controlled with weight shifting and motor speed. In October 2016, Dan Montague former head of R&D at the Naish International posted a youtube video from Jetfoiler showing an electric hydrofoil surfboard (now commonly known as an eFoil) flying above the water in Fiji. In 2017, Lift Foils, a small company in Puerto Rico, developed the first commercially available electric-powered hydrofoil surfboard; it went into production in 2018. The board has an electric motor, propeller, and carbon fiber foils and carbon fiber mast below the waterline. A rechargeable lithium battery and electronic speed controller are encased in a waterproof compartment inside the carbon fiber board. Motor speed is controlled by a wireless handheld Bluetooth remote with a trigger actuated accelerator. After Lift many other companies brought efoils to the commercial market, including Levitate Foils (California), Fliteboard (Australia), Waydoo (China), Takuma (France/Japan), Foil (USA), MSLR (Canada), Flying Rodeo (Slovenia), ArtFoils (Russia), PWR-Foil (France). There are efoil DIY maker/builder communities online. Use In 2021 a father and son crossed the English Channel on propeller-powered hydrofoil boards. They covered 23 miles