Spinners tipped with crawlers or leeches continue to work best for walleyes on the main-lake bars and humps during the day in 18 to 25 feet. You will hook fish on the shoreline breaks or on top of mainlake structure during low-light periods with crankbaits or slip bobbers and leeches in 12 to 16 feet. Look for numbers of perch along shoreline breaks in less than 12 feet, but better numbers of bigger perch are on main-lake structure in 20 feet or more.