I have contracted out thousands of hours of dozer work at my job, but I have never really operated one . Well today I got my chance. We could not find a contractor so I rented a D6 and operated it my self. The first hour was slow and it took some getting used to but I got the hang of it prety quickly. I cleared 3 mles of right of way in fairly thick mesquites today. The only downside is after operating this bad boy, my tractor is going to be pretty boring.