The key to finding Lake of the Woods walleyes is to locate one of the many various sized reefs, or mid-lake humps. Many reefs are not even marked on the map, but can still be found by using my 7520. They all seem to attract walleyes, with the larger reefs attracting the most walleyes. Mobility while fishing various reefs allows you to catch the active walleyes in similar structure.
Walleyes are a structure-oriented fish, most of the time.
These walleyes will be tight to the bottom, lying in the holes between rock and cuts in the bottom. They may be feeding, or waiting in ambush to find an easy meal that comes their way. When fishing structure, you have to be able to stay tight to the structure or your lure presentation will not be in the strike zone of the fish. Move just a boat length away and you will be out of luck. Fishing the shallows with diving Shad Raps or casting Risto Raps rocky points and humps can be very effective.