Get around El Salvador cartel for minimum cover (3-6)

I believe the answer is:

gee-string

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'for minimum cover' is the definition.
I can't judge whether this defines the answer.

'get around el salvador cartel' is the wordplay.
'around' is an insertion indicator.
'el salvador' becomes 'ES'.
'cartel' becomes 'ring' (both can mean a criminal group).
'get' placed around 'es' is 'geest'.
'geest'+'ring'='GEE-STRING'

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

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