I have rethought about trading VIX, and here are something that I noticed. One interest fact was its tendency to retreat back to its .786 level, no matter how much it gained at the first place. From January's to March's, I believe the current VIX is really similar to the move that happened in Feb 9th, with a resemblance on movements and retreat level. The VX future also looks good after crazy selling, and I do believe it might be a good opportunity to continue shorting indices, especially ES or SPX, and of course longing VIX might be a good idea I suppose.