They are searching bags and using wands on folks when they board in Portland - it sucks bigtime. But if you get on in a smaller station (like Eugene, OR) there's nothing. And obviously, no systematic searches when you get to state lines or getting off somewhere that I've ever seen.....
I've taken the greyhound from San Antonio to Oakland, that sucked bad, but the trick is to stay up for 24 hours + before you leave so that you are so exhausted that you pass out for a good 10 hours on the dirty dog, also as a bonus you will look extra sketxhy and nobody will try and make friends with you and tell you dumb stories the whole time.....
The most hard core dirty dog thing I've seen in my life, I was taking a ferry from Bellingham WA to Ketchikan Alaska, and there was a juggalo on that bitch that had taken the greyhound from Tampa, FL to Bellingham, WA, camped outside and then was taking the ferry up to Alaska to work on a fishing boat. Fuck that shit, that is just a brutal way to travel. I'd rather hop freight trains.