Kill it with fire . . . spotted owls are delicious. I will try the cut and spray method on the (relatively) small grove I've got, though, since fire is somewhat frowned upon down there. Sounds pretty doable.
The property actually has some sentimental value for my wife's family too, though a local basecamp is all I was really after. Some day I'll buy the cliff I've got my eye on, but that's a long ways off.