He's been arrested regularly since 1985, when the court first took notice of his mental illness  He pleaded guilty to a felony in that case, which means that he was violating federal law by possessing those rifles on his raft. Trespassing and property damage have been his M.O.for decades. If you want to help him out, maybe you should fetch him and let him use your guest bedroom until he burns your house down. He needs treatment and almost certain, medication would improve his condition if he was compliant. It's not likely he could be, though, without a court order and confinement if necessary.