My daughter and I were there in August. We only checked out sites #2 and #4. The tracks at #4 are all in the river bed. The water was low when we were there and a small area was uncovered. We pulled off our shoes and socks and walked in the water to some of the others. As you mentioned, site #2 was easy to see a lot of tracks. I don't seem to have my pictures in Smugmug, but I'll get some of site #4 up so you know where to look next time.
2009 BMW R1200GS Adventure