For 3 months March, April, May UNG saw a low hold in the 6.72-6.89 area. That low was just broken recently on larger than normal volume. I have been keeping an eye on UNG myself and would like to jump in.
The last 3 days volume has increased to the downside as with the weekly volume. I would watch for a day with volume exceeding 50M with a turn around to the upside and play a tight stop with the days low. IMO the safest play would be to wait for a close above the 6.72-6.89 (the old support) area on double the average volume or more.