Tough to say, but there are a few places to look. Do you have any weedy points that push out into deeper water? Do you have any transition areas, these can be dynamite! Rocks and gravel to sticky mud is the best. Don't forget about flooded brush, even if it is under 4'. Move allot during the day and select your best chance. Sometimes finding a group that is pinned down and you can only get a few during the day can become a ravenous school of predators at dark. Try to get your drilling done before the bite starts in the evening, the noise will screw you up. I have completely abandoned minnows, I use plastics now. Think little and fish light and you can catch fish all day too. Trust your feel and your flasher!