I was up there 3 weeks ago (pere Marquette river). Over 2 days I landed 6 fish. Hooked into about 10-12.
The fish were running real strong there.
Now it's late in the season, I'm guessing they will be way up stream. i fish in scottville (1 city east of ludington). I'm guessing the fish are another 20-30 miles inland upriver from there.