7.5 sq. ft. clear vinyl sail with bamboo mast and bamboo tomato stake boom held together with duct tape. Surprisingly stable, even in gusts. More efficient rigid Coroplast wingsail planned. See also “homemade moped”, “powered trailer pushes bike”, “kite as flag lifter” and “monkey bars pixilation”.
The song, Sailing by Christopher Cross (I still remember when he performed this on Solid Gold).