My family has had a cottage on the lake since 1933 and I have been going to the lake since I was born (1957). In that time there have been several major changes and lots of minor ones that have affected the fishery. A lot of folks are talking about it on the "Conditions and Reports" board but I think this is a better spot for the discussion.
Back when I started ice fishing in the 60's and through the 70's, we used to catch tons of perch 7-10 inches and the weedline was well defined at about 10 ft. Walleye were being caught deep for the most part and pickeral were very prevalent in the weeds. Most everyone I know or saw took just about every perch caught and left the small ones on the ice. I don't remember many bluegill catches being big at that time, but that could just be where I was fishing and what I was using.
In 1979, sewers were put in around the lake. This caused the 1st major change that I remember as the water cleared up and the weed line moved out to about 14 ft. Also, the perch fishing slowed and I heard about alewife being found in the lake. Fishing equipment started to improve also and depth finders became more advanced. Using a paper graph and a flasher, I located a number of underwater structures during the summer, which I found also held fish in the winter and I started to catch more bass, walleye, and bluegill ice fishing.
In 1995-96 another major change happened as there was a massive die-off of the alewife. The ice was littered with them. There was also a massive die-off of weeds that year. I was able to find small patches of weeds on some of the underwater structures I found, and had one of my best years ever on big gills fishing those spots.
The next major change came around 2002 with the zebra mussel. The water cleared up and the weed line moved out to 18-20 ft. I also started catching lots more bass ice fishing then. Now it also is evident that somebody has introduced Northern pike into the lake.
My main reason for going through this is to illustrate that the lake is very dynamic and we have to adapt to it, as it will not adapt to us.
I hope others will share their observations and hopefully we can all learn from it without anyone being offended or insulting anyone else. Let's keep the Reports board for the reports.