I've been lucky to have friends that lived there and still have family there. ^ All the advice up above is good advice. I'm planning on going again in a couple weeks. From past experience I've noticed that an area may seem hunted out as other hunters leave only to have pheasants hiding there the very next day. Our best results were on days when it warmed up. If you get a couple days of decent weather, make the most of it. We walked about 8 miles a day or more on the good days. Walk and cover as much as you can and keep your eyes open out there. Take your time when you still hunt. If you get your hands on a dog, you'll triple your chances of getting a bird.
My first time out was freezing with constant wind at 25-30mph. It was terrible. I froze. Only saw one bird that day and buddy only got one shot off that day. Next day was warm and beautiful. We both saw a few, and managed to bag one, and the more ground we covered, the more I learned how and where they hide.
We spent almost 3/4 of the day looking for land that was open to the public or where we could have permission to hunt. You most likely will need to ask permission and find some farmers that will let you hunt. If you offer them some $$ to hunt on their land it always helps or if you bag a couple, it would be good advice to offer them one. We did at one and they refused any offer. Instead they invited us in for coffee and gave us ideas of where to try. Very nice people up in N.D. Third day we borrowed a farmers dog and we flushed up so many that day we both limited out and managed to burn up all the shells we carried. Farmer couldn't believe where we found them and took his dog out to same spot and he got a couple. You just never know.