The park services have a similar problem, but the solution is simple: * No permanent structures. * You need to move every X days. * You cannot stay in the pa

The park services have a similar problem, but the solution is simple: * No permanent structures. * You need to move every X days. * You cannot stay in the park/forest/etc for more than Y days/month. Cities could forbid tents and count hours rather than days. Criminalizing the act of napping in a park seems like a huge overreaction to peoples' fear of tent cities. If you've never taken an afternoon siesta along a local greenway, you should try it sometime. Bring a blanket and a book, but don't forget to check for sharps before you lie down.