montauker hit it pretty spot on. Get yourself some binos and try to scout spots from a distance so as not to spook birds. He is correct that if you shoot at some while scouting, theres very little chance you will see them again in that same spot. As far as public land goes, its tough to scout because of so many variables. You can scout a public swamp one morning to plan to hunt the next day, but someone else can beat you there in the morning, or after you leave, someone else could come along and jump shoot them or spook them out. Scouting public waterways such as rivers and the bay are especially difficult because all it takes is one boat to push birds in the direction away from you and then you never see them.
When it comes to public land scouting, your best bets are to really focus on weather, wind direction, and tide if applicable. Note what the weather is like and where you see birds during certain weather conditions. You can save yourself a lot of gas and time scouting if you know where birds like to be during the weather expected for your hunt.
does having multiple screen names on a forum and having a conversation with yourself make you an extra special rock star hunter?