A little device I designed and installed on my Windrider Rave hydrofoil sailboat. I call it the SICK (sheetable incidence control). It allows me to adjust the hydrofoil angle of incidence / attack from the cockpit of the boat. Pardon the audio - a partial transcript: "This is the control line here - it fits on a new cleat, beside the bungies control cleat. It routes down the side of the boat to an 8-1 pulley system and allows me to control the angle of incidence of the outboard foil. More lift when you need it - less when you don’t"