Yes, I see one asumption I made. This was that a 3' slop approach presumes a landing point 1.000ft in to the runway. Of course it does not. You can use the d/w theshold as your 3' slope aiming point..but that does not sound like a pleasant perspective. I was never saying that a wrong drag curve approach should be taught to beginners. It is a talented approach to do correctly and has not much room for pilot error. That's it I think.