Vote if you would like to see a double inverse short term VIX ETF or ETN. Essentially short TVIX or UVXY. I'm highly interested, tell me why you would or would not be: especially idiosyncrasies and caveats to said instruments. Primary advantages from my point of view: 1) Available in retirement accounts 2) A re-balancing schedule would decrease trading 3) Re-balancing would essentially offer leverage and you wouldn't find yourself searching for shares to borrow. 4) Your shorts wouldn't be called away at the worst time.