He's useful at fishing (3)

I believe the answer is:

rod

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'he's' is the definition.

I don't understand the rest of the clue.

(Other definitions for rod that I've seen before include "Fisherman's item" , "Stick - measure" , "The fly fisherman's stick" , "- - , pole or perch" , "pistol" .)

I've seen this clue in the Evening Standard.

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