Its pretty much impossible to grow a good sized perenial foodplot in the woods, unless you plan on clear cutting a area, pulling the stumps, and weed killing rest. Sunlight is the main issue, and woods soil is usually more acidic, and would need lots of liming in amount of several tons per acre.
Other than what others have mentioned my only other possible thought is a small area that you find fairly open, like a log trail or log landing. You can use hand tools or a atv w/implements to clear the soil of debris. Spread lime, let sit for a few wks. Fertilize, and spread either a seed like Secret Spot, or No Plow. It'll be more of a hunting setup plot, than a year round nutritional plot. Buts its something.