HFS... Walleye fishery has rolled downhill for years on boot. The days of "everyone" catching their limit the way you describe will take quite a bit to get back to that point. An 18" limit is a start but... actually I'll keep my opinions to myself so I don't upset anyone. I do agree, however, that the fishery *was* one of the better in the areas.
According to the 2016 survey, the estimated walleye population is 1.1 walleye/acre and to put it in the words of the county biologist...
".... reproduction and recruitment are currently insufficient to sustain a quality walleye fishing opportunity."
It's not the muskies... Some the best naturally reproducing walleye lakes in the northern region of Wisconsin are also the better musky lakes too. I'm sure I just stirred the pot but don't take it from me... call your biologist and he will gladly give you the same information.