One of the resources I use to find campgrounds is campgroundreviews.com
. I will go there, read reviews from people that have stayed at the park then link over to the campgrounds webpage. If it looks like one I'm interested in I'll do a google earth view of the place. This helps me see what size the spaces are and where I can get a satellite signal.
We are Passport America and Escapees RV Club members so I also use their websites to look for discounts. There is a an RV park in Porter that is about 25 minutes from the airport that takes Passport America for the first 5 days. After that their regular rate applies. They get a decent review and have pull throughs. It's he RV Park of Kingwood