Seriously, tho, if you just want to get a few individual plants in, what I did was use my ever-so-nifty garden trowel to find the rocks and sort of pry on them a bit, then used the cultivator to rake the dirt away from the rocks so I could see how big they were. Most of what I was dealing with were rocks less than about 8" across and most less than that. Then I'd use my short shovel to clear the dirt out of the hole. Wasn't all that physically taxing, but it was surely time consuming! But I was bound and determined to get those roses in!
Heh, I used a variation on that same technique for this little puppy in a different situation (doggie--Great Pyr---is there for scale.
):
