In the late 90s saw a French (or was he Swiss) kiter fly a routine in no wind with a UL walking 360s and doing tricks so I'd say they go pretty low

He got a lot of applause

(Golden Valley kite fest, Tewkesbury ISTR any other british fliers remember who it was?)
EDIT Patrick Somelet maybe? Could even have been a 'Kick' which was the father of the Shiva IIRC. Why can I remember this kind of thing but not my wedding anniversary
