A cover scent is a cover scent, you aren't going to trick a deer's nose. Number one factor, hunt the wind!!!
Key is to set up your stand for the prevailing wind. Pay attention to where the deer typically travel from, not just where you want to shoot them at.
I try to use natural barriers to keep animals from going downwind. Some of the barriers I use are fence lines, ponds, open fields, rifle towers, etc.
Deer will pattern a hunter. They learn how you come in and out. They learn when you come in and out. And they learn where you are at. Doe especially.
It seems that once a doe learns where your stand is at, she will check it every time before she comes in. Try moving the stand or sitting back a little ways to watch how the deer approach your set. You can learn alot by burning a hunt and just watching.