1) Hunt a new property for a year before making any major changes since it is easy to mess up a good thing.
2) Plant apple/pear tree rows in straight lines. I have a lot of apple trees that were planted without thinking and they look really stupid now that my orchards have expanded and they are the only ones not in a row. Every time I run the brush hog in my orchards I wonder why I planted those first trees where I did.
3) When possible plant food plots and perform habitat improvements in a way that benefits deer while allowing you a good opportunity to kill them. Going crazy with food plots and TSI, tree plantings, etc. might really benefit deer, but if it creates mostly random movements then the deer might be harder to kill. Give the deer some awesome bedding cover and awesome food, but make them walk by a stand to get to use them.