I will add this - deer, especially mature bucks, are getting wise to tree hunters. I find most of my better bucks bedding in areas where you CANT use a tree stand and have to set up on the ground. Often right smack in the middle of CRP fields. Ground hunting can actually be far more successful on these mature bucks then any other technique outside driving them and shooting them with guns (which is not for me). Learning to move slowly (and moving your eyes more then your head), breaking up your outline, thinking through approach is what is key to pulling it off. I love setting up in a natural blowdown along a good bedding entry/exit with my pack saddle. the great thing is that I seldom encounter other hunters where these bucks like to bed (hint, hint).
Another tool that I use a lot is my bow ghillie blind. I will try to find the video on it. I got the idea from a dude called Guru I believe off of tradgang site???? I made some tweaks to suit my purposes. It folds flat during transport and sticks in your quiver like a normal arrow. Can easily be used on a compound as well. it hides the movement of your drawing arm (if you can draw you rbow with out first offering it to the sky gods). very effective for me to allow close range drawing without tipping my hand.