I hunt the MB WMA in Montgomery county and on Sat it is a little crowded but the key for me has been to get far into the bush as possible. Due to the number of hunters, I feel the game has been driven back into the hard to reach areas (most people don't enjoy long hikes, with weapon, stand, etc). So I try to get there early, get in deep, and let the other hunters "drive" the deer towards me. If you're into ducks/geese, I've seen hundreds of woodies and several Canadians there too.
For bow hunting, I head up to Liberty Res in Carroll/Baltimore counties. There are very large numbers of deer there (I've seen over 20 during one hunt on Sat). During the week is great, but on Sat can get busy.
Also have heard great things about WMAs in Washington and Allegany too. I plan on checking those out soon so I can use my 30-30 for rifle season.
Good luck!