^^^^ I have had the exact opposite experience. I have 2 separate areas where I have 9-10 acres of SG. Even though there is plenty of sanctuary and bedding areas on the property, the deer also use the SG quite a bit for bedding. I planted SG at a rate of 4-5 lbs per acre, keep in mind that the SG produces seed also. It is very thick (5'-6' tall) and the deer have created extensive trail system, pretty much the same trails they created before it was SG.
Regarding SG being a mono-culture, I think that is a positive regarding bedding. I am not looking for food/browse to be a part of the bedding area. For me, bedding areas are designed as quiet protected areas where the deer feel safe. I plant blocks of spruce and SG separately. Spruce provides thermal and overhead cover, and SG in the colder months creates both thermal cover but also allows the deer to get exposed to the sun. I have started to plant 10-12 spruce tree blocks in the SG.
From a screening perspective, in my opinion the best long term solution is to plant Red Pine, or Norway Spruce which is a slower grower, in 3 rows with each row staggered. Plant RP every 8'. While the pine are growing, you could plant a strip of SG on the interior side of your pines to provide initial screening.
You can also use SG to create strips of screening for accessing stands.
The other benefit SG adds especially to sandy soils is organic matter. Large deep extensive root systems that grow 6'-7' into the soil and excellent above ground OM. Some of my soils are loamy sand and the SG has thrived in it.
From a bedding perspective, in the picture below there are probably 25-30 bedding spots in the area shown below. As food plots & sanctuary are on far side of the pic, the SG allows me 2 different access routes to stand sites with good screening and to play the wind.
Every property is different and there is no one size fits all answer. Study your property along with surrounding terrain and learn how the deer interact.
Habitat development is a lot like home remodeling ... short cuts & quick fixes usually cost you more in the long run.
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