New to the forum, but have followed for a while. After reading this thread I decided to use this technique on my most recent flight. Flying the mooney I am blessed with a generous useful load. I flew my wife, brother and his wife to Destin for a long weekend, taking off at max takeoff weight. We watched the fuel consumption on the engine monitor and my brother watched the fuel pressure gauge when we got close on the first tank. It started bouncing about 1-2 needle widths for the last few minutes and then we switched tanks before it even stumbled. We landed with 9 gallons in one tank, just as my calculations and engine monitor said we would.
Unfortunately with 35 to 45 knot headwinds out of the north on Sunday we had to stop on the way back to get fuel about midway.