You can only pick ONE, but what is that one project you did that you know improved your hunting for Deer?
Personally I would say selectively mowing certain sections to help funnel deer in. At this time this would be my number one enhancement to the property, even though it is very simple.
Long term and down the road... I plant trees every year, but at year 9 I am just beginning to see their progress.
Just looking for any ideas for habitat managment that you truly believe works.