Only pretend to coil a rope (4)
I believe the answer is:
fake
I believe this clue is a double definition.
'only pretend' is the first definition.
(I've seen this before)
'coil a rope' is the second definition.
(I've seen this before)
'to' acts as a link.
(Other definitions for fake that I've seen before include "Forge" , "Fabricate" , "Fraud" , "Bogus" , "Forge(ry)" .)