I run a brush hogging business with a few larger 30 acre commercial accounts with most overgrown grass and weeds I cut twice a year with a 45hp tractor. I have a woods 6ft rotary and a Alamo shd74 flail with heavier duty y blades. I'm wondering which would I be better off using for these accounts. It doesn't need to be finish quality. Will the woods require more hp with less travel speed? I had been using the rotary and can cut about 2 acres an hr depending on the property. But now I'm wondering about the flail. Which would be better for me fuel and cutting time wise?