Joe Wheeler is a beautiful state park in which all but two or three of the RV sites have full hookups. The campground is big-rig friendly, having multiple sites that can handle rigs in the 30-40' range. However, the park is older and the electrical boxes and are getting worn out. On our first trip there in 2003, the park maintenance personnel had to replace the 30-Amp receptacle shortly after we arrived. Just check it to be sure that your plug fits snuggly. Otherwise, the park seems to be in slightly better-than-average condition in regards to mechanicals. The best loop is the last one, as it has water front sites and easy access to fishing. The marina has pontoon boats for rent, which are a great way to see the lake. The NASA Space Center is also a short day trip away in Huntsville. I highly recommend this park, but be forewarned that it can get a little noisy on the weekends when some partiers and small children arrive.
Piney is a very clean campground with nice restroom facilities, and boasts some beautiful views of Kentucky Lake. The park is very big-rig friendly, but seems to have several seasonal campers. Dogwood loop is the only loop to offer full hookups, and tends to be hard to get into. It seems to be mainly occupied by the newer, more costly rigs. The LBL area is great for sightseeing and has several historical attractions including a living-history area where people are dressed in circa 1800's clothing and work on a farm. They also have a Buffalo range along the main road where you can stop and watch the buffalo. And, as always, the fishing is excellent. Highly recommended, but I suggest arriving on a Sunday afternoon or Monday morning to get the best sites.
This is our favorite Tennessee State Park. While it is an older facility and some of the sites are rather small, there are several sites that can accommodate a 30' trailer and long-bed, crew-cab truck. The main reason that we love this park so much is that there is so much to do. There is lake and numerous streams for fishing, hiking trails, breath-taking scenery, swimming pools and swimming holes, and our two daughter's favorite - a general store with lots of rock candy! I would highly recommend this park, but try to arrive early in the week if possible as it tends to fill up on weekends. This is especially important for those needing a larger site. If you cannot locate a site in the park, Lost Cove RV Park on Highway 111 in Spencer can serve as a backup.