Pulls hard; has guts clearly (4)

I believe the answer is:

tugs

I'm a little stuck... Click here to teach me more about this clue!

'pulls hard' is the definition.
(I've seen this in another clue)

'guts clearly' is the wordplay.
'guts' can be anagrammed to 'TUGS'.
Though, I'm unsure how this is indicated.

'has' is the link.

Can you help me to learn more?

(Other definitions for tugs that I've seen before include "Pulls in a jerking manner" , "Yanks" , "Pulls hard" , "Tows" .)

I've seen this clue in the Sydney Morning Herald.

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