for this scenario there a few ways that I might respond to my own prognostications

(i) given that its all one market I would consider reducing exposure within my portfolio. Take some profits etc. for instance I am now completely out of PAZ and AFT and yes yes I know they've gone up further (because I left some for others coz I'm a nice guy lol)
(ii) short the SP500 using CFD's - as noted previously I use CMC.
(iii) go short some currency pair that is normally correlated to Risk on/Risk off eg Eur/Jpy or Aud/Usd

my disclaimer is for everybody just in case , these threads have a few lurkers I believe.