Any bait shop within 20 miles of the lake will have them. Make sure to get the "walleye deep" model, not the shallow. I also recommend getting the fruit dots color, aka black headed wonder bread. Just about every shop sells some brand of custom painted bandits, they're not an absolute must but they do outperform some days. The only thing they are guaranteed to catch more of are fishermen, not fish.

http://www.banditlures.com/product/walleye-deep/