fish slower with a noisy bait with black and lots of contrast and a crappie nibble ....the fish don't care much if the water is muddy most of time during the spawn and in some cases they even go extra shallow in the daylight due to the camo provided by the lack of clarity in the water .....
also explore areas close to where you normally find spawners as they may have found a new area that has the right substrate for the reproduction mode
and NEVER give up .....