It is hard to get boards in Belize. i have shipped mine. You may have to mail it to yourself because most boards are beyond the size allowed by airlines. Also, consider bringing an inflatable to start. I know some poeople who have done that and they are happy with their boards. By luck, I bought a board in Belize before paddling got popular but now I just don't see it as possible.
Good luck and see you on the water!!!!