Hi Jim, You've already gotten some good advice from members here on PUP and also T&T. One other thing I'd add is that if you're not already a member of the southbound group, it is a wealth of information from folks planning and many already living the dream in Pacific Mexico and Central America. The link is _http://groups.yahoo.com/group/southbound_group/_ (http://groups.yahoo.com/group/southbound_group/) You will need a yahoo address to access this, but can receive it on your regular email address. It's been several years since we were in Pacific Mexico, but as was already mentioned, the electronic charts were more often than not, way off.....Plan to arrive at your anchorage in daylight! I believe that the Mexican Navy has some new charts available that are supposed to be very accurate, but don't remember the details and how to access them. Southbound group archives and files should be able to answer this and many of your other questions. Enjoy your trip! PM is one of the best cruising grounds out there.....the food is incredible (the best in all of Central America IMHO), the people are friendly and welcoming, and the marine life will take your breath away! Best regards, Kathy Youngblood m/v Mystic Moon - Selene 53 patiently waiting out hurricane season in Rio Dulce Guatemala You wrote: <We'd greatly appreciate any input on what electronic chart resources may be available covering these cruising grounds, as well as 'local knowledge' info re "must see" ports/locales.>