I wanted to get a subsoiler, partly for my rocks, but the ones I found were too big, or too small for my use. I did buy a middlebuster, and have used that with some success for rolling out some pretty good sized rocks. Other than the reach from the 3pt hitch, I think a subsoiler would work very well, and leave a minimum impact on the surrounding grass, etc. I bought some steel to make a subsoiler type blade for my middlebuster, and expect that it is going to work pretty well. If anything, I think the angle of the subsoiler blades might be a little closer to 90 degrees from the ground level to work better.