A good rule of thumb to keep in mind is that if someone comes up with a successful “extreme” strategy, there’s usually an extreme counter-strategy for it.

I copy that.
And believe me, I felt quite uncomfortable to write one of my first posts at this group with some sort of “unbeatable strategy”. I’ve seen so many group newbies here doing that, and routinely got their posts pick to pieces … ;)

Of these, bombing an airfield on Choiseul or New Georgia sounds pretty attractive.  It seems the Japanese will be hard pressed to defend both.  Have all these strategies survived your playtesting?

Yes and no. Japan new units and repairing supply tokens are store temporarily at Choiseul. Japan can have one ore two aa gun at Choiseul and always can move fighters after the bombers, so that any bombing raids are hard, because with the ootb rules any hits from air combat are removed before naval/ground combat (the new rule variant with the airplane only air combat I haven’t try so far, maybe it helps).

If the Japanese are buying this many supply tokens, the US should have some benefit elsewhere.

Challenging, as the US player has to run with the Japanese airfield builds to hold step with victory points. Later the Japanese have many units at New Georgia which means the US pays a high price before amphibic assault while the artilley are firing at incoming ships.
Maybe the US can build only two airfields at Guadalcanal and bring more ground units. Maybe not. Maybe it will rain … :)

Understand me right: I’m not want to say that the US player has no chance. I’m not want to say that I have seen all possible moves and counters in the game. I’m not want to say that I have found an “unbeatable strategy”. But at my games it was a very, very difficult task to counter that japanese tactic.