We don't get a full roll. To get a Hog off the deck fully loaded like that, first just touch your throttle so the auto-brakes disengage, and let the plane roll back. Once you are almost to the end of the deck, then set your brakes, raise your flaps, throttle up, WEP, and let her go. Yes I said raise the flaps.
The drag is definately modelled, so don't start dropping the flaps until you have to... ie: as you pass the superstructure. After that let her settle level, don't raise the nose... you'll make it, but not by much. Make sure you raise your gear the instant you clear or you'll never make it.
But the question about lift from flaps is still a valid one. Back in beta I did some tests... I think it's time to re-do them and see if we can quantify the lift from flaps. What should extending flaps do... allow us to maintain level flight at a slower speed? Is that a valid test?
