The take-off required a great deal of care - the initial acceleration to achieve Vmca required a shallow climb, followed by gently pitching to keep between flag limiting speed and Vmca whilst climbing to the assigned target level. Which is why only very experienced pilots were allowed to fly Winston and Clementine at Brawdy - but for those of us lucky enough to go along for a trip in the back of Clementine, flag towing was quite an interesting time.
Although if one of us shot the flag off the back of Winston, 'Puddy' would jettison the cable and come howling back to Brawdy on the blue note in a cloud of condensation!