I recently bought 12 of those crappy 18"X18" stepping stones at Home Depot only because my wife and m-i-law really wanted to get them that day so I could start working on a wal from our front porch out to the new driveway. I have been using a pick-hoe to cut out a square of the sod and dirt and the place the stones down in there so that I can mow over them and not have to trim but occasionally. The problem is that 2 have already broken right down the middle even though I had as close to a flat surface underneath as I could get. At this point I am looking to go buy some flat rock and I am wanting to know what the best tools for cutting these into the turf would be. The pick-hoe worked pretty well for the squares as it was fairly easy to see the outline that they had made after sitting there a couple of days but with the flatrock being an irregular size I wondered if there was a better tool. D**N I should have just asked that to begin with. Thanks.