He was able to fly at high speed for 32 kilometres ( 20 mi ) .
Notwithstanding the aforementioned , Dennis Pagen experimented the exploitation of a flanking line ( that he calls a bench ) with a hang glider along a severe thunderstorm .
Dennis Pagen was able to fly at high speed for 32 kilometres ( 20 mi ) .
Notwithstanding the aforementioned , Dennis Pagen experimented the exploitation of a flanking line ( that he calls a bench ) with a hang glider along a severe thunderstorm .