Yah that can happen, $1000 in seconds.
Take a look at nat gas 1 week and 1 months candlesticks charts, the trend is up and you will be right more times than wrong if you are bullish on NG.
Yes unless you are AT with a perfect record, you will have some losses, but if you make the mistake of holding on to a day trading loss on HNU, you will have to wait a month to get it back sometimes. The errosion is murder over a year to year basis, but over a month it can be recouped. Over a year impossible unless there is a major disruption event. Even with a bull in NG there will be a long term errosion effect with HNU. There will be major updays,
Wholly cow, NG just spiked