I live on a property that is adjacent to train tracks that is bordered by nasty thicket-y weeds - invasive vines, small trees, etc. These weeds have begun to spread around through the various cultivated bushes and trees on the property. I need them dug out by the roots or they'll keep coming back. I would estimate 3-6 hours of labor for a person with the strength and/or right tools.
Caveat: In the last summer or two I have noticed poison ivy in a couple of spots. I would like it removed, too, if possible.