I hunt zone 4 quite often...for small game in the area and do all of my shotgun hunting there which isnt much just 6 day firearm and the doe day but there are some deer around...last i saw there was standing corn along the deleware as you said but it seemed as though thhe deer were feeding during the nightime and were up on top of ridges or in thickets during the day..saw some does during the 6 day firearm as well as a bear n a bobcat...i caught them coming out of 1 extremely thick are into another...if you can find some thick patches of cover pretty decent in size that you think they might head off to during the day that are somewhat near the corn id say that wouldnt be a bad bet...make sure you are in a stand with the bow , the deer there seem extremely spooky....in my opinion on stateland in zone 4 its a gamble...ive patterned deer there and known their usual paths only to get out there all set up and watch them take a different route that i had never seen them use...good luck and let me know how you do...