I don’t know everything, but I’d say exploit the possibilities in your area.
If you have fishing opportunities then take it up few levels and start supplying high end restaurants in your area.
Or offer tours or fishing trips or whatever, lots of wealthy people not sure what to do with their money, take advantage of it.
For example, I have a 2nd cousin in Moldova that started a international fishing trip and lodging thing there that costs him very little in upkeep and he‘s been making about €3000-€4500 a month from April to September.