Ah yes, the airshow take offs by the Buffs (observed from the front, you understand, as from behind they tended to be obscured by their personal smoke screen); as suggested, the lift off tended to be a feat of levitation aided by a considerable area of flap. Once safely airborne the aircraft continued to levitate and, on more than one occasion, I saw the pilots stuff the nose down a few degrees and continue down the runway at a decidedly nose low attitude. This, I believe, to allow the aircraft to accelerate! Sadly I've long since given up queueing to get in at the bigger airshows where one might see such a spectacle...
Missed the programme, (in the pub again!) hoping that a mate has done the gentlemanly thing and recorded it for posterity and his friends' further entertainment!