trail grooming..box-blade or rear-blade?

[3RRL]

...Light duty trenching is possible with a box blade, all you have to do is stagger the lift arm height. Tighten the lift arm adjustment all the way up on one side, loosen it down to about the desired trench depth on the other side. When you drop the blade over the edge, it will then cut at an angle....
//greg//

I think this picture might help with what Greg has described. I used this setup to cut all the gutters on my road. They came out swell.