This market have been 'nuts' for quite a while now.
If +17,08 % is nuts - how about 15 %? 12 %? 10 %? Was it nuts then? What will you say at + 20,00 %?
IMO - if it's a top worth shorting, you'll get your short signal, just like we did last October. Sure, maybe you'll miss the initial drop, but...