Will add my vote for
http://rvparkreviews.com. Anything with 7's, 8's, 9's is worth a look. A random "1" or "2" rating but when you read the comments, they had a complaint about something. (Often when you look at all their reviews, they've had a complaint at A LOT of places. Consider the source.)h
I have a framework that we work with that we'll go from winter spot A to winter spot B, usually from April/May to November/December. I'll use
google maps to see what routes will take us to our "feature spot" of the summer/fall. Then, I'll start breaking it down into drivable segments of 2-4 hours. We try to stay monthly to take advantage of the better rates. That's where we love
RVParkReviews.com. Lets us go to the website (CG has GOT to have a website), also shows campgrounds close to our original city, etc.
We're Elks members, so we always look for Elks Lodges first for overnights.
Casino Camper is a good resource, also, for overnights. If we keep striking out, in order, we go
KOA then
Good Sam for overnights. We try to never go 3 nights consecutive without a long stay.