Of course, the technology without futures may double, and even it is quite easy to double. In fact, it's just luck and a good market.
Most people who don't do futures technology, or those who don't have the ability, want to double their futures, and the result is often a rollover.
Therefore, don't always think about doubling futures and practice your skills. In the case of controlling risks, it is the right way. If you always want to double the price regardless of the market, you will lose a lot sooner or later.