RE: Pattern start
Hoping to clear up a point of confusion: there are no rolls in the Double Immelmann. The Double I traces a figure like an oval racetrack, starting with a straight & level bottom, pull a round half loop up, then a lengthened straight & level inverted top, then pull another half loop down to starting level, then finish with straight & level upright back through center. The point of this maneuver is to maintain track during inverted flight. Of course the half loops need to stay on track as well, such that the maneuver is at all times in a vertical plane parallel to the flight line. This simple sounding maneuver teaches maintaining track in a crosswind, and should get special attention when practicing with a crosswind. Learning inverted rudder is a crucial part of working through the Sportsman class. (The other crucial parts are all the other parts.)