No expert, but I did use to fish a smaller lake that depth and water color-
wise sounds a lot like what you describe. This time of year there, a
1/16 or 1/8 oz. marabou jig was always a killer, red head, black "collar",
white tail. I either slow trolled them, or if I could find a school, cast them
under a slip-cork. Liked crappie nibbles then, too. Funny, lots of times
you would have to "wiggle" the cork real easy to get them to bite - just
barely make it move. And sometimes they would grab it and pull it under
2 or 3 times before I stuck them. I got in the habit of setting the hook
just hard enough to feel if they were on - if not, if you didn't pull it too far,
you could wiggle it again, and get another bite. But black/chartreuse,
red/white, black/blue, and blue/white plastic tubes sometimes did the
trick too, hope this helps. Jeff
Shoals Area Crappie Association