arh...a bit extreme but seem to recall we used to practice same thing in a 204 (Australian Navy UH-1B)
Bring the nose right up to get the speed off...zero if necessary
(the idea is to get the helicopter moving in the direction of down instead of up)
roll her on her side and pull like a mad man. Out of balance will also help.
The tricky bit is when the grounds starts looming up.
Cant remember what we did then...sorry