Don't get me wrong, I'd want everything available thrown at it if I was stuck out there; it's just that people overlook the effectiveness of a properly executed visual search.
I've flown over the area a couple of times and know that it's no fun, anything that can bring this to a conclusion should be used it's just that these days the technological solution is used to the exclusion of the most sophisticated search system ever designed - your eye/brain.
I've no idea how many millions of square miles I've searched but I know that in the daytime I've found more people by looking out of the window than any other method.
It's a terrible area to search - and a worse one to be stuck in - so I wish CAP and their partners the best of luck with whatever search technique they try.