RE: Tree stand or ground blind
I hunt from the ground on a regular basis. I have had very good luck from the ground. Camo clothing is so good these days that as long as you have a nice backdrop behind you and don't make any sudden movements, it is very difficult for a deer to make out your form. If there's a bit of wind and the grass/trees are moving from the wind, it makes it that much harder!
Scent, however, if a different story. It's a BIG factor for Whitetail from the ground. You will have to be downwind, even with the fancy scentblock clothing, in my experience. Once you get the wind right, enjoy a ground hunt once in a while!