I think it depends upon the model of the monolift, Hannibal. The older ones have a 48 inch base, I beleive, and the newer ones, are maybe 6 inches wider. Not positive on those numbers.
I tried to take a stance like Chuck V. in one of the newer monolifts a few months ago, and I cannot get out that wide. I think Chuck must be taller than me.
B.