in fact you could fly final approach inverted and roll upright just prior to the flare
It can be done, but you need to be quick-thinking and very skilled!
Zlin wing Structural Failure Report - Neil Williams
Extract from the report which is a must read:
A slow inverted flare was made and the aircraft was levelled as near to the ground as possible.
Low, low rollout
As the speed fell to 87 m.p.h., 140 k.p.h. a full aileron rollout was made to the right, and just a trace of negative G was maintained in order to hold the left wing in place. The aircraft responded well to the controls at this stage, but as it approached level flight the left wing started to fold up again. The nose was already down as a result of the slight negative G, and subsequent examination of the impact marks showed that the left wing tip touched the ground during the roll, although this could not be felt inside the aircraft. As the wing folded the aircraft hit the ground hard in a slight nose down, left bank attitude. I released the controls and concentrated on trying to roll into a ball, knees and feet pulled up and in, and head down protected by arms. I had a blurred impression of the world going past the windscreen sideways and then with a final jolt, everything stopped.
