Nice stringers are consistently caught in the upper reaches of Little and Big Blakeley on Ouachita. One look at a lake map will tell you that crappie will trek a long way to satisfy the urges of nature.
In the fall, they will sometimes be found on their springtime pre-spawn positions, feeding like crazy. In spite of what many say, it is my opinion that crappie fishing is an inexact science when it comes to locating them. One has to be mobile and flexible until they hit the "mother lode." Savvy? These are general patterns and may vary with all kinds of variables, lake to lake, day by day. But that's what makes it FUN!
Usually I begin at the mouths of the primary and secondary creeks and work my way up the channels, paying particular attention to the inside bends of the channels. Water temp, fronts, fishing pressure, clarity of the water all tend to make things all so uncertain. All that being said, spawning action generally begins in the low 60's when the males make their entrance and build the nests...all the way to the 70's when finally the females leave the nest. Remember also that all crappie do not spawn at the same time.
In the fall, 65 degrees at night is the "go by" I use to begin the hunt for the feeders...all the way to the mid fifties or slightly below, they will gorge themselves preparing for the winter. Crappie never had an original thought in their lives, but the good Lord blessed them with uncanny instinctive abilities to survive and reproduce...much to our delight.
I am sure not an expert by any means, but I make it all fun. If I catch enough for supper then that's a good thang too. Plus, I meet a bunch of good folks along the way.
aj