Once you get to Cuchi Corral the temptation to fly (even if you never have) is incredible. In the area -full of novice and experienced foreigners- there are several instructors who work separately but are gathered in the same group which you contact through the blog listed above. So you can choose the one you like without problems. They are super friendly, and above all, very experienced. One of them, Marcos River, explained these classes and convinced me to fly with him. Guauuuuuuu ... It is difficult to describe the feeling. I was not afraid, even when bound to the instructor I had to run down the launch track.