They may be ugly, but they are the very best fresh water fish to eat. Since I love catfish and crappie, that means much.
In Ozark lakes, walleye feed primarily on shad. At times they will suspend under balls of shad. Other times look for them to relate to structure like bass, but primarily at places they can ambush shad schools.
There is a small, but hardcore group who fish primarily for walleye on Stockton, Bull Shoals, and Tablerock. You might see if you can work an invitation to fish with one of them to see how they approach the species. Another idea would be to hire Mike Worley on Bull Shoals and have hime teach you a bunch in a short period of time.