Good advice from Genghis. I can always tell when my students hit hard or dont track the runway centreline - theyre not looking at the end of the runway. For some of them it's natural anyway, as I drum it into them from the start. However, given a very windy day or a distraction in the circuit, and it can all turn to custard as their brain freezes like a possum in a car's headlight beam and forget where to look or become overloaded. Incidentally, I've never personally met a tail-wheeler who had problems tracking the centreline, its all part of trying to keep the thing straight and on the strip.
Kermie