Thanks craftsman for your post. Now I understand better also another comment about "loaded" question. Apart my undeniable linguistical limits, I have to say that I didn't pay so much attention to the form of questions and answers that I did suggest to my friend. She was more formal, scientific and precise and I suggested her some kind of irony. I was afraid that readers could feel the few questions a little boring and too serious. Probably she was right... she will be a good engineer!
Anyway... that university has a department to study radio-communication stuff. I'm a new disc golfer and I suggested them a sort of exercise. They said, that's ok for a dissertation. At that point, ask to other players if they would appreciate the device was the only, simple, aim of the survey. I hope this is clearer
Thanks again for your attention and support