FREE camping near Zions?

About three miles from the east entrance on highway 9, turn on dirt road south. Indian knoll near here. Where road first forks take left, go till just as the road drops into the canyon (about 1.5miles)...nice site there I usually stay at.
Zion is one of the toughest spots to find good, free primitive camping. Most folks (myself included) keep it pretty quiet. There are good spots to be found near both entrances if you look. Spend some time around here, post some more, and I'm sure getting assistance to find those spots will come easy. ;)