I like the winter, especially after a good snow (my idea of a good snow is 3-5 inches). It is much easier to see terrain features such as saddles, etc when the leaves are off the trees and that can help you locate some decent funneling areas for the deer travel. Following tracks in the snow can also help you find their bedding areas, staging areas, major trail crossings, etc that may be worth another look once the fall rolls around and the bucks start to rub and scrape. Plus, you can keep your eyes open for any sheds Scouting year round is a good practice IMO also because deer habits will change somewhat with the seasons.