We stayed at the BLM campground last October. "Ken's Lake"..... That campground has 2 sections. The first part you would come to (by the lake) has no trees, and is easy in/out. The second part goes down and across a wash. Not sure a large rig can fit in that. We liked that part the best. We would have stayed longer, but the govt. shut down and kicked us out. The "crowd" wasn't as bad as I thought in Moab before the shutdown. The other campgrounds were FULL. Ken's Lake is south of Moab and had plenty of space. SERIOUSLY fell in love with Moab and are planning to go back. :) :)
Be sure to check out Hole in the Rock further south of Moab......a MUST see...LOL