My garden seems to be mostly sandstone, brick or broken concrete below about 4 inches and I've spent the last year moving topsoil and subsoil (8 cubic metres and counting) around to make beds, a pond and a blooming, muddy mess. When I started I riddled the lot, which made sense for the asparagus bed but as I've got bored of moving soil and read Dowding and thought about the earth as more than the sum of it's parts I have become less bothered by stones. Now I take out owt on the surface when I weed but otherwise leave it as drainage and mineral source.
I also think my raspberries stand unsupported because they grow through 6 inch of sandstone rubble which seems to stop the canes from keeling.