Our experience at Spanish Trail was not as negative as Lauren's. We did like the shade; the only shadier CGs seemed to be Canyonlands, in the middle of town, and another one at the north end of town which is being converted to condos. Best place to camp in the area, IMO, is probably Dead Horse Point SP, but there's no shade, the CG is small and really big rigs won't fit, and it's not centrally located. You will need advance reservations, regardless of what you choose.
2020 Toyota Tundra CrewMax 5.7L V8 w/ tow pkg, Equal-i-zer
2020 Lance 2375