Bright warm days are preferred to cold, blustery ones. The sun is lower in the sky this time of year, so light penetration is decreased. However, bright days will cause the water to warm up, which will turn fish on. Frequently, action will be better from mid-day on. One of the very first places I look and concentrate my efforts is on the flats.
Flats are the least interesting types of structure in a lake.
There are no breaks, holes, edges, just flat bottom. But seemingly featureless flats hold most of the active walleyes during most yearly periods. With that definition there is always an exception. The exception in this case are the mud flats of Mille Lacs. Most anglers believe that the bigger fish move to the shoreline in the fall, but the mud flats of Mille Lacs hold fish all year round and these big fish stay and feed during the fall months.