Hey, Motomark, I don't know of an ETF that I would recommend.
Like you I think there will be a short burst to the upside this winter as the temps get cold. I will sell into the upside.
Personally, I think I've wasted time and only a small amount of money (4% down) being in Cheasepeake. Energy policy that involves natural gas in the only thing that will rectify the problem of the huge glut of gas.