Crossword Genius

Dismal prospect for an inefficient sentry? (4,7)

Ross

I believe the answer is:

poor lookout

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'dismal prospect' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'an inefficient sentry?' is the wordplay.
'an inefficient' becomes 'poor' (I am not sure about this - if you are sure you should believe this answer much more).
'sentry?' becomes 'lookout' ('lookout' can be a synonym of 'sentry').
'poor'+'lookout'='POOR LOOKOUT'

'for' acts as a link.

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I've seen this clue in The Globe and Mail.
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