lw, you can wear flatheads out up there on what you are using. Blues are picky. We use jumbo minnows and is they won't hit that, cut the head off, if they won't hit that, cut the head and tail off. You also have to find out what depth they are. If they are 20ft deep I float the bait at 18ft.
35lbs is the biggest blue we got up there. And yes we do have a new state record. Still haven't heard the actually weight yet. That'll be me one day!