In the bang-gliding and parapenting the wind plays an important role. Starting from the same place and at the same time it is possible to fly for hours or just a few minutes according to the weather conditions and the ability of the pilot. John Pendry, Robby Whittall and Toni Bender, several times champions in both disciplines, show us the degree of safety and the problems connected with the study of the ascending air currents during their exhibitions and trainings.