Pasture Renovation, Can you tell a difference after?

[wbvs58]

Anyone used one in flint rocks, does it make the rocks come to the surface.?

I use it on rocky granite country. You get pretty good at judging where the big rocks protrude below the surface, other smaller loose ones will come to surface or get pushed to the side or if a bit stubborn break the shear pin but that only takes less than a minute to replace with a short piece of 12mm rod. I'm going down about 10/12 inches.
Ken