Mowing How do you mow rough ground quickly?

[zmansmac]

I only have 3 acres but it is a bit bumpy and hilly. Not pleasant to cut when I got my little B7500 with 60" mid mount mower 9 years ago. But the first thing I did was refit it with a suspension seat. The next thing I did is get a 60" tow behind Swisher, the one with 4 wheels. So I don't go very fast but cutting a 9 foot swatch gets the job done faster than my neighbors with their zero turns.