3 tablespoons dark rum
2 tablespoons water

1/2 cup malt vinegar
10 green onions, chopped
4 garlic cloves, peeled, chopped
2 tablespoons dried thyme
2 Scotch bonnet chiles or habanero chiles with seeds, chopped
2 tablespoons vegetable oil
4 teaspoons ground allspice
4 teaspoons ground ginger
4 teaspoons ground cinnamon
2 teaspoons ground nutmeg
2 teaspoons salt
2 teaspoons ground black pepper
2 teaspoons dark brown sugar
1 cup ketchup
3 tablespoons soy sauce

2 3- to 3 1/2-pound chickens, halved lengthwise, rinsed, patted dry
1/2 cup fresh lime juice