Don't be afraid to hit some of the smaller lakes with a single public ramp. Most of the boat/fishing traffic is on the chain.
If you haven't already, take a Pirate Cruise. It's a good time with a little rum. Make sure to walk the plank.
Pirates Hideaway | Pirate Ship Rides, Ice Cream Shop, & More in Eagle River, WI
I have in-laws that fish Green Bay for Walleyes. One of these days I want to make that trip with them. Just never seem to have enough vacation time.