Does anyone have tips for getting up to Oregon to see the eclipse in August?

I forgot it was even happening but I am desperate to witness it in it's total eclipse path. At this point I think my best option to drive up to a National forest (likely Umatilla) and camp my ass there for a few days because traffic and general services are predicted to be totally broken all around Oregon.

Does anyone have experience with dispersed camping in OR's national forests? I can't figure out where I'm allowed to leave a vehicle for days at a time. Definitely willing to park my car and hike in.


The other option is taking a train to some population center like Bend and illegally bumming around because anything (including airbnb and people's front yards) is totally booked.