In my un professional opinion, deer like to have something at their backs, to sort of hide, or block themselves. In most cases where they are bedding, it can be a standing tree, or a stump, or a hump in the ground. If none of these things are in your proposed bedding area, then it wouldnt hurt to place something there, just to try it. In my experience deer are going to bed where they want to bed. You can thicken the area up to make them feel safer, and it should help, but if they dont want to bed there, they wont. What I have noticed in my area is, in the winter, they will bed under cedars, pines, spruce trees. In the spring they tend to bed on south facing slopes, usually between 1/2-3/4 to the top. In the summer I have kicked a lot of deer out from the edge of my food plots, usually within 20 feet in from the edge of the plot. In the fall, I avoid wandering my land, but I know after they get shot at, they are in the thickest swamps around, in my case that would be tamarack bogs.
These are just my personal observations, and will more then likely vary on my neighbors land, not to mention different climates, and different regions. My suggestion, try a couple, then you will know. I like to tweak everything, rather then go all in on anything. Such as logging. I have went back and forth now for several years about logging my land, but instead, I pick one area a year and hinge it, or locate oaks and open them up, or open my food plots up a little. Just because little mistakes are easily over looked, large ones, like a clear cut logging, if it doesnt work out, then I am out of luck for many years.