The OP didn't say that pressure in years past was the same but I'm guessing it was. The weather has been very poor for two seasons in a row now. It's just not cold enough to prompt deer to move during the daylight. Be careful trying to draw too many conclusions from the last two years.

I agree that 320 acres is very small and can be over pressured very quickly. You can manage small tracts, but you have to really limit the pressure. Lastly, there's somewhat of a paradox to QDM. Everyone thinks they want QDM but often fail to realize that it may involve lowering the population. Once that population drops these guys abandon QDM. If you truly want to manage for more impressive deer, it sounds like you're on the right track. If you want to see lots of deer, keep them hungry. A well fed deer in good health doesn't have to get up and look for food during daylight. Just one more reason to limit the pressure on the spot you're hunting.