I've hunted the big wood all my life and cedar swamps you almost have to crawl to get thru them. Takes a bit of scouting(best time is after the season is over.) and look for the trails most heavy traveled. Look for small clearings also. Funnels are good places to find also like a narrow dry spot between a couple of swamps or marshy ground.
Hunting heavy brush woods areas isn't all bad. Ya you can't see the deer till they are about on top of you but that is true of the deer also they can't see you either. Just need to practice quick rifle handling and have a nice easy rifle to use. I like the carbines like a Winchester model 94, Remington Model 7, Remington 760 (7600) carbine, and several others that are over all short and easy to swing in thick brush. Don't over look a shot gun like a Remington slugger which is short or a Mossberg. I also prefer a peep sight for that type of shooting over a scope.

Al