Gosh the Gulf of Cortez sounds wonderful.
Have a great time.
Usual boring old message and a good excuse for some seafood in the unlikely event you have not already taken care of the Omega 3s.
There is some evidence that Omega 3s may assist although trials are mixed
http://www.nutraingredients.com/Rese...othe-migraines
http://www.hbnarchive.com/2008/081608.mp3
http://www.ncbi.nlm.nih.gov/pubmed/1...ubmed_RVDocSum