Uhhh, you guys act like there are just a dozen loose rocks lying around on top of the ground that can be picked up by hand. Come out to my place and see the acre+ of projecting rocks that are merely the tip of the much large deeply embedded rocks (boulders to you) that cannot easily be gathered up.
(This is an open area below the acre or so that has been finished off for lawn - we have a total of about 12 acres - the rest is wooded.)
We have a heavy duty belt driven large self propelled mower with a thick blade that can withstand bouncing off the ocassional fixed rock. Another popular method is to use the various heavy duty wheeled walk behind string trimmers. Those are OK for grass, but we have a lot of woody shoots or actual sprouting trees that come up, so we need more cutting power.
A person without heavy equipment could not possible "clean up" the rocks in my yard, and I expect his too.
Reply to NG only - this e.mail address goes to a kill file.