The forecast is showing a warm front moving in, the fish may move up in the shallower warmer waters. I would long line troll jigs, or grubs, 10' or shallower for crappie, and you may even be able to catch them moving into the shallow cover once the sun has been out for a while. Before the massive amounts of rain over the last couple weeks, I was catching crappie and gills in around 20' of water around 10' to 12' deep, jigging standing timber.