Depends on how far into WV you're wanting to go.
Rippling Waters Church of God CG
in Romance. Ask for the pull-thru's at the very front of the CG.
Camp Creek SP
@ Mash Fork in Camp Creek has a spattering of fhu's if you can get 'em. Otherwise, the electric only sites are just fine.
If you just need a place to boondock, Tamarak in Beckley has a parking lot designated just for overnight RV's. You'll want to be up at the hilltop with Tamarak, not down at the truck stop at the bottom.
Hope this helps.