Yes you can, though it's not advisable to do it for long term, you can do it. But make sure you do have margin for to have a long and far liquidation price. I saw some with a very long position and the profits is really huge. But thus kind of trade is very risky, if your position is good make sure to adjust always the TP with a good profit. That's the advantage of having that feature to make sure even when your set is hit you are already on gain.