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Not sure if you can find it in New Zealand, but they sell white duct tape here, and you could simply put a piece of that over the holes in the hood until you have time/money to patch the holes...
And you could also do the full-front block but with a gap for the top grille (and maybe the lower ones)
As for the back, a cheaper option could be to create a rear semi-boat tail (white lines), with a panel that hinges up to allow the boot to open all the way (orange line).
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