This season like most others has a lot of false starts before the water stabilizes and the fast action starts up. It's wierd a few weeks back I saw the spawn coming early then the bottom dropped out of the weather and the water cooled back down. I'm actually surprised your catching them shallow. Other than the one big one that I caught shallow a couple of weeks ago they have all been very deep. Not bottom hugging but still suspended 8 feet down in 12 foot water.