shinji gracefull freestyle
Hand 11-4 =7 units
head 15 -8.5= 6.5 units.
Slipfactor is 7/ 6.5 = 1.08, not exceptional.
I think Shinji gets very little propulsion from his kick. Thats a big difference with the elite 6 stroke swimmer. He always looks like a pullbuoy swimmer to me. But his streamline can hardly be improved.