sunfish,
The official POH of my Super Cub contains precisely nothing whatsoever regarding flying techniques in different situations. Zilch. What do you suggest I do, therefore? Stay on the ground.
And the idea that reaching for the flap lever on take-off is somehow dangerous is preposterous. You really have no idea and I am not sure why I am rising to this. I suggest the real barrier to safety is your blinkered attitude, not people using tried and tested techniques to get the maximum performance out of their aircraft..
QDM
P.S. I am very glad I do not live in a place which limits hot water temperature by law. If vehicle speed was limited to 10mph there would be fewer road deaths and presumably orthopaedic surgeons would then be as happy as paediatric surgeons are in your state.