One of my lakes have some nice Perch that move up onto the 6' - 9' flats just before dawn until ~ full sun-up and again from the time the sun touches the horizon in the evening until it's gone and are hungry. Dinks may be around all day but the big ones head deep in between. Have no idea why only on that lake all winter and not on others, but don't mind it abit. Get near ice out and the flats near reeds are crazy in my area, leave the fat girls alone.