Length and public campsite availability lately?

Feel your pain. We had problems with Hunting Island SP. The description of the sites say something accommodation for up to 30 feet. Then the actual size of the site we were looking at was huge. Like 35 or 40 feet wide and 60 feet long. I ended up calling them and was told that those measurements were the size of the entire site. I could not understand if that was part of the brush and undergrowth, but apparently it was. We did not get a site because there was none that would match our time off