Concur with 4Greens
When I started reading this thread I was going to suggest exactly the same thing. Curses, beaten to the punch.
However, I can give an example that Deighton cites. That is bomber crews were desparate for height and would drop one stage of flap in the cruise, ride the uplift that it would cause then raise them again, hopefully 50' to 100' higher and continue to do so again and again. Must have been hell on the crew during the process but better than an 88mm up the fundamental.
