Create Your Own System
Start with a good topo map. Sketch in roads, fields, power lines, food plots, and other vital landmarks. Then, with a ruler and pencil, draw a grid across the map. Woods uses grids of 200 by 200 yards, but yours might be larger. Use a coordinate system (letters for rows, numbers for columns) and label each square with a unique number, like "Y32" or "AG38." Give everyone who hunts your land a copy of the map. Whenever one of them scouts or hunts this fall, have him jot down the grid number and hours spent there, as well as the does and bucks seen (and possibly shot).