Something some may want to look at is . Lake Nipissing Data Review .
I found it on google and it is from the MNR.
After reading it a couple times it would seem to me that the problem is with youth mortality and the fish are growing into the slot size before they have a chance to regenorate the population.
So this would suggest to me that the fish are very heathy and have lots of food with very little competition?
So hear is somthing to ponder.
What if the slot size was changed?
Nothing can be kept under 50 cm?
This would alow the youth to mature and spawn while not hurting tourisim.
This may be a case of MNR not wanting to admit that the slot size program didnt work?
Regardless Nipissing is in trouble.
If you alow the smaller fish to grow and spawn there will be tonns of fish it may take 6-7 years but I dont see what the alternative is?
Just my thoughts..