I've developed a technique that I discovered quite by accident.
If I've been given a slam dunk, or I've been asked to keep my speed up, I just wait until I get to the point where I need to slow down and go downhill, and I roll in full nose up trim, and keep a level attitude by applying progressively more pressure on the yoke to keep from gaining altitude. Granted, if I ever loose control of the yoke, I risk gaining altitude, and I do risk getting a cramp in my arm from the forward yoke pressure, but I can't argue with the results.
I don't know if it's the increase tail plane incidence or what, but I slow down quickly, then I can throw out the gear, then the flaps, and can land in 500 feet.
Mark