A wing is designed NOT to produce lift on the ground
....but it does when the wing starts lifting above 80 kts!
I take it dad tested smaller types with big spoilers? Spoilers on airliners are not particularly effective, in fact sometimes I think they produce more vibration than drag. I refuse to accept there is ANY appreciable drag below 100kts, and very very minor drag up to 140kts. Remember at 1 division ONLY per 5 kt tailwind, you should never have more than 7 units aileron applied. Anybody who has more is not doing it right.
I positively maintain you cannot 'sense' a wing lifting. You can 'sense' the movement of a wing lifting, no matter how clever a pilot you think you are, in which case it is already physically in the process of lifting. Too late- it is already happening. So you are jockeying with aileron while you are desperately trying to jockey with the rudder to keep centreline? Why not make life easier for yourself? All I was trying to say was 'try it, and form your own opinion'. It's how it used to be done. It worked. Suddenly, because some truly astonishing operators now fly the thing, it is all dumbed down into lawyer-speak. That is how we used to do it, on 400 tonne 747s in hot and high operations on limiting runways. How is it suddenly so dangerous now on an overpowered 737?