Fished T'Ville last Friday without success. Observed the schooling action you described too. Got there before sun up and fished until around 3:00. My buddie caught one crap all day and I only landed one bass. Used minnows on jigs and mini tubes. I think part of my problem was technique, as I am a fairly inexperienced crappie fisherman. I'm learning though. Hope to go back in the next few days armed with better knowledge.