From what i'm reading in "Take Her Deep" The skipper of the USS Halibut who wrote the buck describes life in the pacific as a walk in the park. Sure at the end of the war the Germans began having it harder, because they were losing. At the start of the war, We only really had a handful of subs and had to rush a bunch out to the pacific. We had a lot of sugar boats and early sargos. Each theater of war had it's differences and difficulties and should be considered within each own context.
I think I can surely say that the Pacific Theater for subs was in no way easy
