Of all the issues traditionally listed as causes of tailing loops that one above is astonishing. And even more astonishing taking into account that you can simply rig your rod, get out and try its validity for yourself.
For starters, a tailing loop is a transverse wave traveling along the fly line, generated by a sudden down-up motion of the rod tip during each individual casting stroke; that is, the anomaly in the rod tip motion that creates the problem is always within a single casting stroke, not in the shape of the imaginary line described from the start of the backcast stroke up to the end of the following forward stroke (or vice versa).
Copied&Pasted from Tim’s comment below:
“But Aitor I would have to argue that in that video you are not breaking the 180 rule as you are allowing the line to fall enough to then afford an upward trajectory…”
This is a screenshot from the video above showing the position of the line just after the start of the forward cast. Can anyone point me out where that fallen line is?
For more insights into tailing loops and 180º:
No Tailing Loop. Again