While never a good idea to take too many chances, I'd expect there's really very little difference at all between the two. Other than perhaps the proximity factor.
It would be an interesting exercise to actually measure...unless, of course, you really don't want to use the tractor any more as a side objective!
I couldn't survive on the place here any longer w/o the utility tractors and the manlift...they're my crutches for everything that I can't manage to do by hand any more that was so trivial at 18... :(