The ‘Kilbo Plans’ were drawn up by Dave   Kilborne (USA), and were distributed free in the “Low and Slow” magazine #6 in   mid 1971, and became the starting point for all other plans especially in the   USA and the UK. Those plans were derived from the Bennett ski kite, which Bill   Bennett introduced to Kilborne in 1969, which was a copy of an Aerostructures   (Dickenson Licensed Product) Wing.