Pros watch the wind. The best hunters have learned that the wind shifts constantly, and must be continuously monitored. They picture the wind as a living, breathing thing that flows like moving water, carrying the scent of danger to a supersensitive nose. Pros control their scent. Never forget that ungulates live in a world of scent, just as we live in a world of sight.
Pros do preseason research.
If you plan on hunting a new area, you can't afford to go there blind. Spend some money on long-distance phone calls, speaking with anyone and everyone who can give you insight into the local topography, game populations, and hunter pressure. Create a file so your data is easily retrieved and studied. Pros know that hard hunting without hard scouting in advance is worthless. Unless you know where the game is before the hunt starts, you're skunked.