As a lot of operators, our A300 and other freighters don't use tail-stands. All C of G movements during loading are calculated by the Loadmaster. (must keep an eye on it still!)
A good feature of our types is that when empty, they sit at the foward edge of trim. I imagine that due to the tail mounted engine, the MD-11 doesn't! How far in the envelope are they guys?
I was told that when they are positioned by tug, a ballast pallet in the foward position is required. Is the MD-11 certified for a weight bearing tail-stand?
Some aircraft have them, but only to be used as a visual reference. Result= BIG HOLE!