The perfect shark requies the X,A,B,C have some kind of relation,which i gave in the chart either.
The entry of the shark is point D,usually the D must be 0.886XA or 1.13XA retracement,in KC,the D point is right at the 0.886 XA
So,i have already give a shot 2015-9-7,at 115,and i close the trade at 130,just below the downtrend
But ,the shark's 1st TP has not arrived yet ,it's 0.382 CD,about 155,the 2nd TP 182,the way is not that simple of course.
So,i decided to do the longtrade for the time being,the next entry may be at 122.3,it's the 0.618 retracement from 113 to 137.45,but i will be patiant because the wave goingdown is very strong.