What is the best lofty risk/high reward investment, next to potential of doubling investment within few months?
Answers: I think that futures are probably the superlative risk/reward speculation. They are not investments. Double your money in a few months. Actually you can do much better than that even and also the risk is great. You can loose your entire investment surrounded by a matter of minutes. With futures you are working beside a 10 to 1 or higher leverage.
Some might argue that option are a higher risk/reward. They might be correct. But they do suffer from anyone more expensive because of the premium that one has to payment to secure an route. But indeed the leverage is significant. And the risk.
Go to a casino and put it either on black or red on a roulette table. Almost a 50% hit and miss you'll double your money probably not bad considering the reduction right now.