If the beds are in a feeding area, I would bet that they are night time bedding areas, not day time. If you are getting evening/night time pics of good bucks, not dinks, then I would say that they are night time beds.
I would try to hang your stand "10-15 minutes away" from the feeding area, not in the bedding area. Does first, then little bucks, then the "vampires". The big boys hit the feeding area right at dark. A few "deer minutes" minutes from the feeding area should put you in a good spot.