Geo is on the money here, small tea stained ponds, preferably deep and with sum flow (inlet outlet). I got a spot I found looking for shiners, that with 2 traps and a 24 hr soak with nuttin but drydawgfood , I hauled over 70 crayfish when I returned. Place is tiny but is feed by a swift moving stream and is as deep as it is wide. Crayfish trapping is like minnow trapping- ya gutta try 100 places to find 2-3 killa spots.