These fish will be feeding but are likely to be gorged by the time you find them. They will have had their fill of bait and be very selective about what to have for dessert. Present an opportunity just too good to pass up. If you have your heart set on surface lures, try the clear plastic ones or with just a hint of color. Work them slow with plenty of pauses.
Most strikes come just as the lure to starting to move after being stopped for a while.
You may find better success trying under the surface. A suspending bait or one that falls slowly can be deadly under these conditions. Dead Worming works now when nothing else gets a second glance. Be slow and patient and don't expect the hard hit. These fish may just pick up the lure and move awhile before they bother to eat it.