There are so many large private spots. Many in the 400s and 500s. Message the camper who created B4B through the Bound4Burlingame Facebook page and she will give you exact site #s to look at. Bound4burlingame Facebook Page
you can also go to their map page and scan to the bottom and click on campsite number to see a video of that site. You can go to their YouTube channel and view videos of every site within the park. They've done alot of work to help everyone.