Well, from my experience(which is a lot) There are 2 things to keep in mind here.
1 - There are no absolutes in deer hunting
2 - bedding areas are relative to feeding areas, and feeding areas often change.

With that in mind , just remember that bucks like whatever provides SECURITY. However, on a given day, security may be in the form of visibility, on another day it may be thick cover, etc. I've seen mature bucks bed within 100 yds of barking dogs, I've seen them bed on high brushy benches, south facing slopes, north facing slopes, on fences separating thick timber from a huge wide-open pasture, in deep thick nasty "junk" and in shallow depressions in open fields, etc.

Factor's that affect bedding areas:

Food sources
wind speed/DIRECTION
temperature
stage of the rut
availability of doe groups
time of year(foliage)
parasites
proximity to water
HUNTING PRESSURE
rain
so on and so on.

Since we know the rut is the best time to take a MATURE buck, we'll focus on that time and say that a big buck will always choose his bedding areas with does and security being the only things on his mind. Early in the rut, he will sacrifice the does to maintain security. In the peak of the rut , he will sacrifice security to maintain the does.
My advice is leave your hunting area alone as much as possible until the time is right, then hunt near the security cover proximal to the preferred food source in your area, ALWAYS playing the wind. I hunt the does at this time because the bucks are doing the same thing. Good luck!!

PS. I don't know where you live, but I will point out that there are areas in the country where the variables don't change that much , and it may be easier to pattern bucks there, but I'm guessing if you lived in one of these ,you wouldn't have this peoblem.