As a realistic answer that hopefully no one needs, stealing food and shelter is probably more comfortable than prison. Just do that, and if you get caught then mission accomplished anyway.
Dude living in a tent fucking sucks if you're trying to hold a job and not on a distance hike. Even distance hiking it sucks, lean-to's are absolutely preferred. But yea I guess it's better than nothing
You just can't hold down a job when you are homeless. I new a few who had tried, but something always gets in the way. That being said, a lot of missions/churches will let you use their address as a mailing address.
And there's been efforts to cut that down as well, some places won't accept a church as a mailing address for official ID, voting, etc.
However, monks/nuns/etc use a monastery as their legal address, and that's considered legal, so.... if Our Lady of Perpetual Exemption were to become registered again, and open monasteries throughout the US, homeless people could then in theory become monks and list their permanent address as the nearest monastery