I make the trip from Port Washington WI at least twice a year. There are a million different ways you can fish them. Some use a kind of dropper rig where you have a 1/4oz bell sinker at the bottom and two plain hooks tied 6 and 10 inches above that. Some use a oddball jig and wax worms. Some use jigging spoons with waxies or minnow heads. This year isn’t shaping up to be a real good year for getting out to the deeper water. As stated above, watch some YouTube videos for a general idea of how to set up for it.
More then anything else call a local baitshop or even a guide who is on the ice everyday to get a decent idea of conditions. Also these guides use public ramps to access the bay. You can follow their tracks to get a general starting point, just be respectful and give them a lot of room, say 1000 yards at the least.