On Sat, 16 Jun 2007 00:43:35 GMT, Short Wave Sportfishing
wrote:

I'm kind of constrained to units that
use the Navionics package in the CF card format - I have a lot of
money invested in Navionics Gold and Platinum CF cards and I don't
want to lose that investment.

I understand your issue but the technology has changed a lot and you
can now buy a single CMAP NT+ wide area chip that will cover your
entire boating area and well beyond. I'm using 3 year old Furuno
chips which have considerably less capacity than the latest and
greatest, but I can still go from south Florida to New England on 4
chips (including all of the Bahamas).