Spearfishing on a tropical island! What else could be an occupation for a tired retired special-forces soldier of the USSR Navy? The rest is just trivialities to figure out.
First, individuals here don’t survive—you need a caste that will accept and take on part of the responsibilities. Only the local mindset isn’t ready for radical changes in the way of life inherited from their ancestors.
And second, there’s absolutely nothing here for the thing you love doing! And it will be hard for the one who’s used to buying everything at “Sporttovary.”
Besides, the old “friends” remind about themselves from time to time, not letting you relax. So what then? Go with the flow… or what?