The fundamental drivers of gold as an investment tend to work on various levels. On one hand you are looking for definitive results but on the other hand you do not really need to take too much risk. You must buy gold when it is at its cheapest price.
The onus is then on you to only sell it when the price rises. The resultant profit will make the investment worthwhile. It might also give you the flexibility to get involved in other projects. One of the formats that you will be looking at is known as the Krugerrands trade.