$ProShares Ultra Bloomberg Natural Gas (BOIL.US)$ This one i...

This one is suitable for the long term. Keep a good bottom position, don't chase the increase. It's enough to rely on the bottom position. The decline widens the gap and increase the position. At least fill up the position in 5 steps to lower the average price of the bottom position, stop chasing when it's shaking, and stop the profit part of the increase when it soars. Just boil it slowly, even if you wait a few months until it forms a multi-head arrangement. Remember, you're too greedy