Just scanned the Western USA part of the map.
Then enlarged it to an appropriate size by guessing what size would still fit the map and not look too bad or obviously “home made,” but still would be larger enuff to fit my needs of a larger Western USA. Kind of hit and miss on the enlarging. I initially printed out a couple of drafts on paper to see how well it would fit once I was ready to place it.
I had to darken the scan somewhat to get it to be same tone as the board colors.
Then I selected a semi gloss photo paper and printed it.
Then trimmed the map down to the coastline leaving the “light water” edge on the map. I also trimmed the northern part of enlarged map to allow it to fit better into the already existing coastline where it joined to Canada and voila it was done!!
I secured it to the map with tiny strips of double backed scotch tape.
The only caveat is that it allows Mexico access to sea zone 56 and it covers up the 55 in seazone 55 and it partially obscures “San Francisco,” but I’ll either let that go or relabel it Los Angeles! Go Dodgers!!