From your description it sounds like the Ultrastick. I've seen 2 guys doing formation flying before, but never 4. I remeber just trying to get my plane to fly next to a buddy's plane was almost impossible. One was always going to fast, and by the time you did catch up you had to make the turn which threw everything off. I'm sure if we had identical planes it would have been easier, but it still probably takes a heck of a lot of practice and collisions to get good at it..
20 years ago