Without seeing your place it's a bit hard to tell, but generally my first idea would be to use the native tree species that you already have there as an attractant. The easiest/cheapest (my favorite criteria!!!) thing I would do, is to start pruning the oaks and other favored browse species you have to encourage new growth lower down on the tree so that deer can reach it. Go to the search function on here and put in "hinge cutting" and you'll see what I mean.
You've stated that you have great mature oak trees. That's great for a mast crop (acorns) but they don't do much for winter browse. It would still be a good idea to maybe fertilize the White Oak species that you do have, as they are a prefered acorn for deer and turkeys.
If you have some woods area that has less desirable trees for deer or "junk" trees...Siberian Elm, Swamp Maple, etc.....then you might want to consider clear cutting or doing an extremely vigorous clearing short of a clear cut to open up the forest canopy to encourage new growth. In a few years this area will be a deer magnet.
It also wouldn't hurt to plant some cedars, as they not only are a good protective tree cover in winter for deer, but they also will browse them. Ultimately what you want is DIVERSITY. That, IMO, is the best all around deer attractant.
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