Nothing at all like ground hunting in snow covered pines!! Great photo.
I've had several deer smell me and stand there and blow and blow and blow having no clue where I was. Shot one once that smelled me at the base of my tree, jumped back about 10 yards and started looking around for me.
I suppose I'm in the minority as I don't see ground hunting as any disadvantage. You just have to know where it will work and where it won't.
The wind, lack of cover, and location are the problems most folks have with the ground. No matter how good your cover is, if you don't have the wind, you have no cover.
Likewise, think about when you're in a tree and how tuned in you get to movement. A bird flipping a wing at 30 yds catches your attention. Imagine how fast a deer picks up a human sized figure shifting weight at 50 yds. You gotta move when the deer' body language says it's ok, not when you want to.
When you set up, look for locations in which the deer are likely to be focused on something other than your location. Along a drainage ditch when they're focused on the other side. Near a few logs they have to jump over. Old logging roads where deer tend to focus on the open area ahead as they approach. I have one location I've shot a few from in which I have no cover at all. I just stand there next to a tree. The only thing between me and the deer are 15 yards of open abandoned railroad followed by 5 yards of brush, and the deer trail. It just so happens that in this location, every deer on that trail is focused on what's ahead and they pay no attention to what's on the other side of rail bed.
Just remember to look for advantages in setup, that no cover or camo is good enough to fool a deer that's looking, and the wind is your best friend, or worst enemy, depending on how well you use it. Oh yeah....And always cover your face and hands!!