How do you know there are plenty of shares available for shorting?
Float is only 2 million and you don't even know for sure who or what is behind this move...
I remember having the same discussion with a shorter on the ROSG board when it ran from 2.00 to 7.00 in a couple days time, float was very similar to CALI at the time...
Long story short, it continued to breakout all the way up to $23 in less than 2 weeks time and they had NO institutional interest as well...
I think shorting these types of low floater plays are far from being a "piece of cake".imo