I live in Colorado, but I can give you some tactics that should work for walleyes through the ice, they sure work for me.
First of all, walleyes are most active, especially through the ice, at the twilight periods surrounding sunset and sunrise. Fishing is much slower during the day, so sometimes it pays to target different kinds of fish during the daytime.
I would fish the same rocky structure you fish in open water. The rip rap around dams, sunken rock reefs and humps, gravel bars, off points, and steep dropping bluff banks. Concentrate on depths of 10 - 25 feet during these periods, sometimes deeper, sometimes shallower.
A flasher is an absolute must. You need to be able to know what the depth is and see your lure and the fish.
I would use two lines, one a tipup baited with a small live minnow, and the second line should be a jigging setup. Jigging rapalas are by far the best. Tip these with a small minnow head. If the rapala doesn't work, I would use a small jig tipped with a live minnow. Usually jigging will outproduce tip ups 3 to 1.
Start out jigging within a foot or two of the bottom, checking your sonar for fish in other depths. Don't assume a fish 10 feet or more off the bottom isn't a walleye. They are in other depths besides the bottom two feet, depending on where the baitfish are.