starting around the end of march, the crappie should start to school up, right now in most lakes they are fairly spread out. if i were fishing this lake i would focus around the deepest parts until the watter started to warm up then move in shallower. an easy way to get the crappie in a particular spot is by adding your own brush. i have don that to smaller ponds and had superb success. Beetle Spins or simmilar jig/spinner rigs have been killer pond crappie lures for me over the years, however if you find a brushpile where they congregate at marabou jigs are hard to beat. good luck and tight lines