I havent heard much but that is par for the course. Perch fisherman are mostly tight lipped. My guess is around cal park, gary light, or in front of burns ditch perch can be found, some days probably fantastic numbers. When I had my smaller boat I did it a ton, now I have to wait for a perfect drifting day so I dont do it much.
The South End provides useful resources and discussion forums for those that fish The South End of Lake Michigan for Salmon, Steelhead, Perch, and Bass as well as elsewhere in the Region and Chicago area.