One day Ron Fieseler took me up in N8888E, a two place Skybolt that he built, to do some aerobatics. He demonstrated a loop, then a roll, etc, and then I tried the same maneuver. Amazingly, I did an excellent job and had a blast in a very powerful, very capable plane. I will never forget that ride. The Skybolt has a 540 c.i., 350 HP.Lycoming IO-540 engine. This plane accelerated down the runway like a jet.