All our lakes are fished out of the dumb fish.
It's catching the smart ones that will put your knowledge and experience to the test, and there are plenty of smart ones
Honestly, I haven't fishing Nosbonsing, but everything I have ever heard about it was that there was great opportunity for Musky there, and they like to eat Walleye soo..I'd say there is probably a decent Walleye population...
Hopefully someone can offer first-hand experience and advice.
Tony