Boy, would I love to shed hunt on some flat, ag ground! Ive seen some beauties at my outfitter's in Pike Co Ill.! Here in NY Adirondacks, though, it is pretty tough. I have only found a few, and have put miles on my feet for them. They are all pretty chewed by rodents when I do get them, though. That said, finding them is almost as exciting as hunting the deer! I will keep plugging away, and I always take my light shot-gun for the grouse.
I like to look at bedding and feeding areas, and ususally follow big tracks, and look for sheds. It's tough, but rewarding.