I don't know much about Norfork but I fish Ouachita quite often and it don't get much clearer than it. I would be looking for brush in the 15-20 foot range and vertical fish it with a tube or Bobby Garland Baby Shad in a color that resembles bait fish. If you can find brush along a creek channel drop that would be my first choice but any brush in the right depth has the potential to hold fish, making them bite my be another story though.