I think you’re misunderstanding. There is no crystal ball. As Mises said: “If it were possible to calculate the future structure of the market, the future would not be uncertain.”
The Austrian perspective is just a more sound economic theory (i.e. a better explanation) of economic occurances. In this way it provides a clearer understanding of what happens when, and why. And it is through this understanding that overall long term trends can be forecast.
Here’s a great interview with Jeff Tucker and Frank Shostak in which the economist talks about how Austrian theory combined with an analysis of money supply make for an excellent forecasting model.
Here are some other links on the subject:
The Precariousness of Forecasting in Human Affairs
The Plight of Business Forecasting
Verstehen and the Role of Economics in Forecasting, or: If You’re so Rich, Why Aren’t You Smart?
The Art of Forecasting: Great Expectations, Small Triumphs
I mean if you’re really interested in current investments as an Austrian perspective might encourage, I’d say Peter Schiff is the best guy to listen to. He’s got a handful of books on the subject. Next I’d look into Marc Faber and Jim Rogers.