Sounds like the plantations are probably over 5 or so years old, so setting up on the SMZ's or old roads will probably be your best option. Do they allow food plots? You may be able to scout around and find a edge around the plantations you can at least make a food plot strip. Try contacting one of Weyerhauser's foresters and see if they will help you pick out a small area for a food plot. Most of the timber companies have a good relationship with their lease holders. You may be able to spend a day scouting and find a good area with old scrapes still visible, look close.