No, but on the other hand having different settings on different tacks is the sort of thing that would really psych me out.
Another thing to bear in mind is that I've never worked on a boat that was truly symmettrical. Its always been a case of establishing the best datum I can and then working...
I suppose the "like I'm 5" summary comes to:
The foils on a boat need to be aligned, the more accurately the better. In the old days we used a piece of string as a reference to get a straight line. Nowadays most folk use cheap laser levels cause its easier to be more accurate.