GOLD may insulate US currency holders against increased US government debt however because the Australian currency is positively correlated to the US gold price. Any gold price rise will not flow through to Australian investors.
Over the 2009 calendar year the gold price in US dollars rose 25.8%, however the GOLD EFT share price in Australian dollars declined by 3.9% due to the stronger Australian dollar.
The only answer is a GOLD ETF which is hedged to the US dollar. This does not exist.