Drop the Swedish Pimple to the bottom, bounce it on the bottom, slowly raise it about a foot or more, hold it, drop it and repeat. On a take or hit, set the hook. Many experts use locators or fish finders to locate and stay with the schools. If the fish move, you move. Some run the locators continuously to be ready for action.
Whitefish usually are in schools.
Lakers are usually the larger loners. This vertical jigging technique is equally effective on open water fishing or ice fishing. First ice is usually the most productive time to ice fish for walleye. Action can be fast by jigging Swedish Pimples without bait. React quickly by setting the hook to any tap, strike or line hesitation.