K, Same way as you got it here as far as I know, only in reverse. Suggest an email to Orlando Perez and you should get a reply. Ask questions that require an answer is the best way. Otherwise you may have to repeat the process. Have you look on their website to see what they may have there? Or I suppose you could drive it. Just head out, pass Isla Mujeres and keep going without a course change. Only when you can see Cuba, hang an left due north, then after you are clear, dead ahead for Key West. Take extra gas as you cannot make it on one tank.