Ok i knew this may have incited a few responses like this, i was not trolling at all!
The Tommie is not placarded for anything other than flaps up spins, hence my question.
I would never-ever-ever perform any aerobatic maneuver in an aircraft unless it was in the right category and i had been instructed thoroughly in the maneuver.
I have chandelled and looped gliders before and i'm aware of what can go wrong with the maneuvers, i imagine the energy which could build up in a powered aircraft would be substantial enough to be structurally unwise :-)
I have flown the tommie as my primary aircraft in training and after my PPL and i know how quickly it can pick up speed!
Sincerely chaps i was not seeking advice for sneaky loops in a club aircraft
As usual some very helpful and informative replies- and if you watch that Iron Eagle Vid you'll see the tommie nearly falls out of the sky at the bottom of the roll!