Hacienda Resort in Las Cruces/El Paso is our stopover. They have looong pullthrus. We have dry camped in Van Horn. Balmorhea State Park is a nice place to stop. The big draw is a spring fed swimming pool. Pullthrus are actually long pollouts. I'm sure Ft. Stockton has some camping, but we usually go to Davis Mountains State Park instead. It's about a hour off I10, but a nice oasis in the desert, about 6000' MSL. Fills up fast so call ahead. We haven't needed camping between Las Cruces and NE TX, but there are very few private grounds.
Try this: http://rvparkreviews.com
West shore of Lake Buchanan:
Black Rock Park is 2 mi. off Hwy 29 and was rebuilt about 7 years ago. Nice place operated by the Lower Colorado River Authority (a quasi state agency). I don't think they have pullthrus, but it's on the water.
East shore:
Canyon of the Eagles is camping, lodge, restaurant within another LCRA park. Unique setting with access to the lake.
Big Chief Resort is pretty new and had lots of potential, but time and neglect has taken it's toll.
Inks Lake State Park would be tight for a 39'+ tow, but there is a golf.
If you come into Llano from the West on Hwy 29, stop at Coopers BBQ. The food is good, but even if you don't eat, the grills are amazing to see.
Greg
N5LFH
2007 Chariot