Heidecke has some awesome crappie but very hard to pattern with no structure. They mainly roam and follow the shad. People know but generally just fish around launch with slip bobbers in the spring. I've done best trolling sr5's until I contact some fish and mark bait then either cast or jig. Much more concentrated early.

Vulcan lake in crystal lake has MONSTER crappie but sucks to fish with 30ft clarity and rental only. Fish average 13" and up, seen them up to 18". If you could fish out of your own boat it would without question be the greatest trophy fishery in the state, possibly Midwest. Only been open to public 3yrs and strictly c&r.