I don't yet have a box blade, but am making plans for spring rock cleanup in foodplot fields. I was thinking that windrowing them by york rake would allow me to collect them in BB . I assume you use a BB with 3-pt free floating so it follows the contour of the ground. If you reverse the blades so that they curve backward and adjust them to protrude an inch or so from the bottom, would they likely act like runners to keep the BB off the ground a bit avoiding moving a lot of dirt while still collecting rocks??