When I was a kid and wanted to go hunting, My grandfather would point to the cows, He'd say "Boy when the cows get up and start feeding, we'll go hunting". "When they are laying down, the deer are laying down as well". We always got what we went after when my Grandfather went. Years later I noticed the cows would feed at the same time the Solanar Tables in one of the outdoor magazines said the deer and other wildlife would be up and feeding.
Then I moved to Florida. There the locals only fish the tides, the times inbetween the tides are slow and not real productive. I noticed the solanar tables also reflected the tides.
While I don't use them exclusively, I do and try to be out and looking during those times when I am in the field. And those times seem to be when I am the most productive.