Agreeing with a lot of what has already been said. I LOVE summertime crappie fishing, in a river and small creeks off the main river. I fish shallow water (3 or 4 feet), old wooden lay downs. No point in fishing from about 10:00 a.m. until 3:00 p.m (give or take). Once you find them, keep going back. I wish I knew what draws them to the same hot-spots, but I don't lose any sleep over it. I have about six spots that produce regularly in summer. Other spots look identical and I almost never get any in those, with the rare exception of a fish or two here and there. My problem time is Winter, it's hardly worth going for me; but, that's just me, others do quite well at that time of year.
GET THE NET HAROLD, GET THE NET!!