It's an instinct. The way you get good at it is to know yourself as best you can. Learn the ways in which your body gives you intuitive signals, and trade on them. This is not an easy game to get good at. Short term trading of specs is a bit like professional poker - most lose over the medium to long term, and a few make a killing.
The other option is to put it into a performing managed fund, say one that invests in China and India.
