Depending on what stage of maturity your timber is you may well need to harvest some of the larger oaks as mentioned above. Most of the trees in my woods are in the pole stage with the largest of the oaks being 15-16" so they will be worth alot more when they reach 18-20" so I have chosen to wait 7 to 10 years for a harvest. The best way to create good bedding areas in open timber is to do selective cutting in different locations. The best locations are located on high ground and have several "junk trees" to be cut. Unless you can identify the different tree species I wouldn't recommend you cut at all until you talk to a professional who can mark the species to be cut. When I cut I leave the oaks,walnuts,cherry,hickories and hard maples etc. with the primary focus being wildlife benefit. The trees I do cut I only cut 2/3 of the way through and let them fall still attached. Many of these trees will continue to leaf for the next several years creating an instant bedding site.