A/C,
Buy a SAFE in town at one of the hardware stores (Not Maliks they suck) and BOLT IT TO THE FLOOR somewhere (hidden) in your place and put any unneeded credit cards, cash, passport, important papers, naked photos of island girls etc. in the safe.
Also make a color copy of your passport (photo / info page) and have it laminated so you can carry it around for ID etc.and not worry about loosing your original passport. I had it done at the photo/copy store in the "Sail Away" plaza on front street across from Fidos.