Retreat from the exam!
Yep, I do RFTG. ugh. My teacher said that maybe it was going to get too confusing if we started doing literary schools of thought. Instead, like Laz said, concentrate on the economic, philosophical, scientific and religious (paradigm) changes/shifts that have occured around the time the texts have been written, ie the last 50 yrs or so. For Heaney, the religious/political issues in Ireland, media, dying out of the Gaelic language, agriculture's change in regard to science. For Hulme, the migrations to NZ, resurge of Maori culture (ie philosophical and religious), changing areas of work and education, spread of international influences (look at Kerewin.). I do McLeod as well (Lost Salt) and he's good to identify big ag vs science and philosophical/language/cultual blending and retreating. Looking at the spread of info and the global economy is key, I think.
Don't be too worried! It's a big-ugly-syllabus that didn't quite give us any boundries, so stick with the key words in the syllabus and the rubric, and if you can before the exam try and read your texts again (not the Bone People!!!!). Just remeber it comes under the texts and ways of thinking banner, and you'll be fine.
Good luck!
PS get yourself a copy of the syllabus at boArd of studies too.