If a man has the resources to fly a plane from Nebraska to Tennessee, for a duck hunt, surely he can afford to pay a guide for a day or two to figure things out. To fly-in blind and hope to figure it out as you go is not a formula for success. If he is going to spend a week there and has the luxury of watching the forecast to pick his dates, no problem. But most guys like that are too busy to carve out the time needed to figure it out on your own. And I'm guessing the dates are set because calendars had to be cleared and appointments worked around...

Tell him to hit google and find a guide that can make the expense of flying the plane, hotels, tags and food worthwhile...