We stayed at a free spot along Tinkham Road (NF-55). It’s the same road that the paid campground is on but there are quite a lot of free dispersed spots. The ones on the river side looked pretty large and quite nice. We were just sleeping in our car and found a spot on the opposite side. It was free and convenient for hiking Annette Lake the next morning, but trash that people leave is disappointing! Other than that, the road overall is a great spot for a free site.