Walter Lord wrote a really good book on the Coastwatchers: https://www.goodreads.com/book/show/18683511-lonely-vigil
These were, for the most part, British and Australians who stayed behind on Pacific Islands and fed info to the Allies on Japanese shipping and aviation. If they got caught, they faced a brutal death. Unsung heroes of the war.
Baba, there's lot of great debate on whether the Japanese not attacking the fuel tank farms was a big deal or what if the carriers had been in port. Both would have really, really hurt if they had been attacked. They would have only delayed the inevitable though.
By December of 1941, there were 11 Essex class carriers under construction with 7 of those launched by the summer of 1943. We put another 30+ escort and light carriers in the water by summer of '43 too. Throughout the entire war, the Japanese launched 16 carriers of any size (7 fleet, 6 escort, 2 landing cradt carriers and 1 seaplane carrier.) We launched 102 fleet, light and escort carriers by war's end with 17 fleet carriers alone before the Japanese surrendered with Midway and the FDR (both from the upgraded Midway class that was 50% larger tonnage wise than the Essex class) both hitting the water by October 1945.
The Japanese were never going to win a war in the Pacific.