I agree with Neil, having lived in the islands for many years. You should
make and effort to fly a the proper 'Courtesy Flag'. That is why it is
called a 'Courtesy Flag'.

If you don't want to purchase each and everyone before you leave, or are
uncertian of which ones you will need, carry along bunting of each color and
spend those idle hours hand stitching the flag for the next port. You could
even cut it out and glue it together, if you don't want to do the sewing.
Should last as long as you will be staying..

For various bunting colors, check with Sail Rite, they have a variety and
can sell you just about anything you might need..

However it might be nice to have a good picture or tracing of the flag
details.. Most of these flags that are recognized as Courtesy Flags have
some 'reduction' in detail so you can get away with that..

--
My opinion and experience. FWIW

Steve
s/v Good Intentions