Even with scent lok you should still play the wind. But deer are unpredictable as everyone here knows. You can expect them to come in downwind of your setup but you never know where they will come. Thats why I still wear a liner suit. It may work or it may not but this was my first year using it and I was able to see more deer than I ever have and I had a few deer that surprised me and came downwind but they didnt spook.