Was wondering if anyone employed a strategy to protect themselves in the event of a sudden disastrous event such as huge earthquake in Tokyo, LA , a major explosion or some other calamitous event. I daytrade equity index futures from the long-side perhaps 80% of the time and would like to insure against the unforseen while in a position. I'm talking about something which takes the market down several percent or more instantly, a situation where a resting stop does not work because all bids disappear. I have considered some type of put option strategy but admittingly don't have much experience with them. Can anybody comment on what they do or would do under these circumstances.