With regards to the subject you've eluded to.....I needed no training.........that was inherent knowledge (I'm sorry to say). Seven children later and a whole lot deeper in debt I'm looking forward to those blessed "senior moments" when I can be content in knowing that it's primary purpose is waste-water removal!

Back on topic......The Sturdy Bird II will also perform loops, axial rolls, flat spins (inverted too), hover briefly, full power dive and recover, inverted flight plus all the basic aerobatics. (Providing all the above mentioned modifications were performed)

As always, this is my most humble opinion.