Finding usable camp sites

Our 5th wheel is 38' and our TV is a long bed dually and yes, we're limited, especially if we want enough room behind to bring down the ramp. This is our first summer with it, but we've still managed to find spots in county/state parks to accommodate us though. However, they aren't the spots we want sometimes. Like we spent the weekend 2 weekends ago at Flatiron Reservoir, and all the lovely waterfront spots were too short despite being pull throughs. The site we had was nice enough but the "view" was of the road beyond the campsite.

We haven't tried federal as most of those around here are way up in the mountains and the hubs isn't comfortable enough yet to drive up windy mountain passes.