I don't know how familiar you are with the area, so I don't know exactly what to tell you about.
The Chippewa Flowage is a huge area! Our favorite campground is Lake Chippewa. Here is their website: http://www.lakechip.com/index.htm
Herman's Landing is just across the street, and the food is very good there. There is a Famous Dave's BBQ restaurant in the area, and gangster Al Capone's Hideaway has a restaurant and is open for tours.
If you are going to be bringing a boat, Lake Chippewa has dock space. There are many resorts in that area. Trail's End Resort is another nice resort, anthough that is on Lac Courte Oreilles (La-coo-ta-RAY), a very large lake near the flowage. Both places are on the LCO Indian Reservation. There is a casino in the area, and I believe they have campsites there, although it is not on the water.
Hayward is the nearest town, and the Freshwater Fishing Hall of Fame is located there. The museum is housed in a 60 foot tall fiberglass musky. The area is also known for its lumberjack shows. There are several specialty shops in the downtown, and a fantastic fudge shop.
If you are looking for an easy day trip, Lake Superior is just a couple of hours away, a scenic drive through the Chequamegon Forest (Sha-wa-ma-gon). Bayfield is a nice little town on the shore, and from there you can take the ferry to Madeline Island, the largest of the Apostle Islands. There are several tours to many of the islands in the chain. Duluth Minn. is a few hours' drive from Hayward, too.
We've lived a few hours away from Hayward for over 20 years, and go there fairly often, so if there are any other questions I can help you with, please let me know!