I used to have ~6 on 110 acres. Low-key access is a problem here. It's tough to hunt this property because of limited access routes and unfriendly wind patterns.
The ash borer situation has really impacted potential stand sites, too. Many hundreds of great trees for stands are dead statues still standing, or they are corpses littering the ground everywhere.
I now have only one actual stand hung on that acreage, but the reason for only one is because, as of this year, I've become a dedicated Tree Saddle hunter. Pretty much every fricken tree in the woods can be a stand if I want it to be a stand.
If you don't have a saddle, you are missing out on a fantastic tool.