Location with Black crappie

Mid December and the ice is here to stay! Myself along with my buddy Marc and my father in law Jeff all caught our limit of Crappie this Saturday! The ice started out around 4inches but with a sunny 40 degree day we were leaving with about 3 inches by end of day. We found these fish in 20-25ft of water near a rock bluff. They were suspended about 4-5 from bottom. We used small ice blades tipped with a minnow or spikes.