Hello Cat Driver! Nope, Ive never been an agricultural pilot, nor do I aspire to do any spraying at this young and tender age
. I can claim to have done some strip work, and as you can see, I am still intact and flying. Admittedly you dont always look at the far end of an undulating strip, but as was said, we were discussing a typical runway with a student pilot at the controls. Practical flying training proves it works. Taking your agricultural example on board, and giving some thought to what you were trying to say, I concede that you do still look subconcsiously laterally (as well), for depth perception above the ground. But the whole point of getting the student looking down the end achieves two things. First it gives them a good aiming point; secondly it prevents them from looking at the surface directly in front of them and getting ground rush, which results in flaring too high resulting in a bounce, a go-round from the recognised bad landing, or at worst a very hard landing.
Cheers.
Kermie