You need to understand that in many areas of the Carib, you are not permitted to work unless you have a work permit
which is often very difficult to obtain and usually takes months to get approved.
Depending on what your nationality is, restrictions can be sever on what jobs your able to get... if your allowed at all.
Your best bet may be to restrict your "clients" to personal and referral contact within the cruising community.... lots of work to be had in that group but unfortunately we are also a realllllllly Cheap
bunch of people!!!