I had an experience yesterday that I don't understand why it occurred and was looking for some input.
Quick background on the area and lake I fish. The basic weather pattern here is often calm mornings with some cloud cover that burns off fairly quickly, with an onshore breeze that picks up in the late am and runs through the afternoon. In the spring the winds can pick up a bit more than normal, but it still follows that basic pattern. Except for the winter, the fish typically react by being active in open areas near cover early and then as the sun rises higher in the sky, retreating to either under docks or deeper portions of the lake.
So yesterday was a day that followed that weather pattern, albeit the am cloud cover was scattered and the winds that picked up later were stronger (10-20 mph). Surface temps on the water were 62 degrees to start the day, air temps started around 55 degrees and topped out in the low 70's. There were a good number of male bass making beds, most were not locked on to them and there weren't any beds with multiple fish on them signifying actual spawning.
The first 30 minutes when I went out was a little slow, a couple of bites but not much apparent life shallow. As I cycled through things, I figured out there were alot of fish, mainly females, under the docks and they would take a weightless wacky senko skipped far back underneath (2-3 feet of water). From 6:30 am - 9:30 am, I caught 17 bass at a very steady pace. I was surprised that had gone under the docks so early, but figured this pattern would last the entire day.
Then at 9:30 until 11:00 am, the dock bite shut off completely. At first I thought it may have been the location I had moved to, but it was like that at the next one as well. I was still occasionally spooking a male bass or two making nests, so I knew there were fish in the area, they had just vacated the docks. I had an errand to run, so I pulled back to the dock, left and returned a couple of hours later.
By then, the wind was moving pretty good by now and after some experimentation, I found a steady bite again with egg laden female fish. However, instead of under docks, they were out away from the cover, in 4 - 8 feet of water, in the shade of the pontoon boats docked at many of the homes. No bites on the sunny side of the boats, only on the shaded side and out away from the boat itself. Over the next two hours, I boated 2 dozen bass, now using a 5" lizard on a shakey head. I'm pretty convinced these fish were the same ones who first thing in the morning were under the docks and that when the dock bite died, I was running my boat over the top of them.
What confused me is that both in the morning and the afternoon, the fish were in the exact opposite locations of where they typically would be found. The weather conditions weren't so different as to force the change. The only thing I could come up with is the spawn may have been the motivation for the difference, that the females are acting based on once-a-year reproductive urges as opposed to rest-of-the-year feeding urges.
Any ideas and any other experiences similar to this?