If you have a certificate to teach from the states, I recommend going to an international school job fair and try and get a job that way. That is the best way to make an expat living wage.
Someone posted about their experience with Carol Morgan--from what I hear a great school, and pricey--and that the applicants for the positions had superior qualifications. In a small country with few international schools I think you will find the applicant pool to have at least a master's degree or the equivalent ten plus years in the field.
However there are many institutes, etc., that will hire....
Try Dave's Esl Cafe (
www.daveseslcafe.com). There is a Caribbean forum. I post there as Alitas and I have listed some schools there that I know of that are hiring but not for a living expat wage. Which means, come with money saved up to live the experience.