Elbert, woolly mammoth.
I agree with you. Don't need to open the flood gates but maybe a quota max number and/or special work permit for limited time. Considering PADI has already been getting its nose in Belize's business, perhaps that can be used to persuade GOB and Guide Assoc.?
Might also bring to the notice of Belizean instructors thst there's an overall benefit to themselves in this.