Have you ever used a 3ph Landscape rake to finish grade a rock road ? Until I moved to Idaho , I had never seen it done . The results are simply amazing .After you have established your crown of the road and graded your ditches , switch to a rock rake for the finish pass . Angle the rake just a little to windrow the rock to one side .Very little down pressure Then bring it back across the other way . You will love the results . The County Road crew does all the finish grading of gravel roads this way in our area .