This method need little bit attention but effect is very good and loop to loop conection is not to bulky.
Also there is no air in braided loop . maybe it is not big problem but if we can do something better why not
I think this is a very strong method but the only time I tried it my whipping wasnt very neat.
Has anyone tried simply threading through and then forming a grinner type knot to lock the loop. Then you put a sleeve over the knot and loop/flyline join. i tried this in "practice mode" once and it seemed strong but havnt risked it in anger. it was certainly easier IMO than trying to whip.
Only problem is you have to strip a much longer length of the core.