I would suggest to trade VIX options, not any ETFs nor ETF options on vola, b/c as said, IMO ETFs are scam...I will say this,the VIX is a very good indicator of general,overall market sentiment and a long bet placed right now on the VIX is eventually gonna pay off because you know it's not gonna stay this low forever.

And: I think Bollinger Bands is a better indicator...
