Looking for opinions on Flaming Gorge

We stayed at the Manila KOA and thought accommodations were very nice. Owners were very helpful and doing everything they could to make sure their customers had a pleasant experience. We took a day drive to Dinosaur National Monument and another day drive along the east side of Flaming Gorge. The dam was very interesting. The one campground that looked like it was improved was Lucerne Valley. Don't know if they have any FHU sites but it looked like a nice campground. All others as I recall were primitive.