I am not exactly sure how your plot is set up, but I like a thick edge for deer. They seem more confident and less skiddish when the edge is thick as in 10-feet width of grain sorghum that is 9-feet tall all the way around. This may be less suitable for quail, but it is a great tactic for deer. Security is a must for deer...and a palatable food supply. Also, around the edge, back in the tree line, fell and thin trees to allow for more sunlight but lay the trees and debris to create gaps, specific places for the deer to enter and leave the field. This will keep you from breaking your neck watching ever square inch of your edge and knowing where they should be coming and going.