Great Free Place if You Make the Long Drive Up
It's a long, bumpy road up to the very top, but there are some open spots to park your vehicle and trailer in somewhat seclusion toward the peak. Very happy I discovered this place but you'll have to go a lot further up than where the pin/map marker is dropped!
I recommend not going if you have a normal low clearance car... although I did notice someone somehow got a Prius up there
Month of VisitApril