I know of no walleye clubs specific to Nagawicka. I belong to Walleyes Unlimited, here is our website to find out more, https://walleyesunlimitedusa.org/ . I have not heard of a weekly walleye contest around here. There is a weekly bass tournament that they rotate lakes weekly. I think the lakes are Nag, Okauchee, Pewaukee and I believe one other. As the other person stated, Dick Smith's can probably point you in the right direction. Good Luck.