I believe some are right on with the out of state pressure.The same issue exist around the Big -G the word is out for trophy Bass and high creel limits of crappie and Bluegills.There are 15 per day limits of crappie and certain states and Brim no more than 30.
When you have Guides that take out 2 to 4 individuals sometimes 2 times a day and if you limit out? that could average 240 fish a day x 6 guides 1,400.00 fish.That is all good if the population of spawning fish can keep up with pressure from the experts and the novice fisherman.
Just few years ago on the Big -G a group of individuals from up north had close to 1,500 bluegills and shellcrackers and a freezer they had brought with theme and were caught at a local camp site.
I know there are guides that do a great service for the lakes and community and thank you for your hard work and fishing tips.Maybe a hand full of lakes can handle that much pressure but it's obvious the northern lakes can not.