With so many lakes in the region, you can expect a lot of boat rentals. All of the resorts in Sunset Country offer boat rentals. Most of them are fishing boats, but some also offer pontoon boat, cabin cruisers or even a sailboat.
Go fishing or just explore the lake. There are many beaches to stop at, waterfalls to view, or places for a shore lunch. If you're lucky, you'll spot some ancient pictographs painted on the rocky outcrops around the lakes.