Straddling the foul line

[Rich]

As recent teaching in college football has taught me, I don't need to be standing directly on a line to see whether a ball has hit a line (or just to the left or right of it). I just need an unobstructed view.

All of these mechanics discussions end up devolving into personal preferences. For years, the AL umpires straddled the line and the NL umpires stood completely in foul ground. Sounds to me like either works just fine.