There is so much boondocking available in that area -- it is just amazing. Here is what we did -- after a lot of Google Earthing along the various forest roads, we chose several different possibilities and dropped pins on those sites on our GPS app. For our first night in the area, we stayed at an RV park.
The next day, without the trailer, we scouted several of our "maybes," chose a site, and then went back to the RV park for the trailer.
We did this in both 2016 and 2017, for a couple of weeks each time. Heaven on Earth, in my opinion.
And rather than say "try this road" or "try that one," my advice would be choose a specific area that you want to stay in, and then check your Forest Service Motor Vehicle Use Map for suitable roads. Then take that info to Google Earth, and you can easily see the pullouts that others have used for boondocking.
It's a lot of work to do it this way, rather than staying in a campground. But the peace and quiet are priceless.
2012 Fun Finder X-139 "Boondock Style" (axle-flipped and extra insulation)
2013 Toyota Tacoma Off-Road (semi-beefy tires and components)
Our trips -- pix and textAbout our trailer"A journey of a thousand miles begins with a single list."