Second smoked herring for boss on trawler? (7)

I believe the answer is:

skipper

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'boss on trawler?' is the definition.
'skipper' can be an answer for 'boss' (thesaurus). I'm not certain of the 'on trawler?' bit.

'second smoked herring' is the wordplay.
'second' becomes 's' (common abbreviation).
'smoked herring' becomes 'kipper' (I've seen this in another clue).
's'+'kipper'='SKIPPER'

'for' is the link.

Can you help me to learn more?

(Other definitions for skipper that I've seen before include "Shakespeare's giddy youth" , "Chap aboard trawler" , "who makes short hops" , "Ship's captain (colloq.)" , "team leader" .)

I've seen this clue in The Sun.

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