Lethal on walleyes. Rig with a live nightcrawler or soft-plastic IMPULSE® nightcrawler. Choose Metallic FishScale® Attractor Blade patterns to match light and water conditions. Natural patterns including Nickel Rainbow excel in full sun and clear water. Rainbow Yellow isgreat for lightly stained water, while Parakeet and Sunrise Rainbow are top picks in dark, stained and muddy conditions.