I never knew what the TC in the Cosmic TC stands for, care to enlighten?

As Kitehouse say on their very own website:-
COSMIC-der
Trick-
Competition Kite von Christian Stahl.
So by what you are saying, the longer the Wishbone, the better the apparent tracking? Interesting...I'll go give it a try.
Ye gods no !

Based on what Some People™ wrote about adding a wishbone to a bridle I did try it on a number of kites and the results I got were.... variable. Certainly
too long made it deeply horrible; wobbly and mushy. Enough was difficult to come by and I never really got the sudden precision/tracking improvement I was led to believe I'd get. Tried it, abandoned it.
Mike.