For what it's worth, I remember during my '400 sims the instructor showing us a double eng failure just after rotate ( at a reasonably heavy weight, using 13 HKG, so no immediate obstructions if you keep it straight). The trick was to immediately retract the flaps to either 15 or 10 or 5 0r whatever the next up flap setting was ( I can't remember, it's been a while!) This gets rid of the drag, puts you perilously close to the stall (in the shaker, I recall) but lets you float serenely out to sea, level - ish and sloowwly accelerating to 2-eng climb speed. Then - voila!
Not a practical procedure, but the only one I ever saw, so I stored it away somewhere in the cobwebs. ( Not on the 744 any more, so don't care....)