Mukiha, increase the rent to 50 thousand plus 3 thousand for security. Another option is to ask him to move for a month as you renovate the house but before the month is over, rent it out or organize for two mountain size fellows to stay there for two months as you look for a proper tenant. The other option is to engage the services of a commercial house management and rent collectors where he pays at their offices. They know how to handle the likes.
Wisdom to detect when share prices hit rock bottom.
When interest on bonds keep going up, you know the bear run is on high street. When interest on bonds start leveling, the bear has met the bull and they have hit rock bottom. When the interest rates on bonds start coming down, the bull has overpowered the bear and you better be riding the bull.