Plant 4 rows of tropical corn or egyptian wheat in a + patter across the plot. Cut an angled path across each arm for access. This way when the deer look into the plot, they only see a 1-2 acre opening instead of what looks like a huge open place. It should encourage more daytime use. You'll have to have your stand (stands preferably) either high enough to see all 4 or better yet, put it at the center of the + and cut a small walking path to it from 2 different directions.

Being able to enter and (more importantly, IMHO) exit a stand without spooking deer off the plot is WILDLY underappreciated. It's an aggravation, and can be more difficult to access, etc but is worth the trouble.