All year round... thickest pads or pad stems during spring, summer and fall.. downsize during winter and fish the same places during warming periods or switch to power plant lakes. If there is hydrilla under the pads, even better. If no pads then along the edges of thickest cover I can find in preferable three or more feet of water. Stump fields with hydrilla, especially if there are lilly pads there too.
prime time... when pads are thick. Last year late summer/early fall I think. Picture below is of same area this past weekend, pads just coming up.
Caught 8, all but one on 6 inch swimbait, 5 of the 8 had tails that were red, all between 3 3/4 and almost 5.5. Couldn't see any beds just anchored up and fan casted, over and over, move and do the same. Slow retrieve, just feeling for bottom. All were subtle bites. Missed a bunch.
Oh... and I almost for forgot, I did catch a 12.5 on 6 inch swimbait 11 days ago on a different lake.