I have a very short landing Goldberg Eagle 2. It's my messing around / experiment plane. I installed flaps with offset hinges that drop all the way to 90 degrees. I use about 40 degrees for takeoff. Anyway, I can fly an approach to land and be just stupid high, crank in full flaps, chop the throttle, point the nose down and it will decend at about a 40 degree angle or better with no gain in airspeed. I can then bring it down to the runway and land it to a full stop in 10-15 feet on a day with no wind. If I put brakes on it I could probably get it stopped in 3-5 feet. On a day with a 10kt wind, I have actually landed it backwards. The wing doesn't care how fast the ground is moving you know. [>:] The main thing with all of this is managing your energy, just like in full scale planes.

Just though I'd throw that in to the discussion. It doesn't have to be the biggest, most expensive process in the world to get a plane to land extremely short.