Test canvas for use in bad weather (7)

I believe the answer is:

trysail

'for use in bad weather' is the definition.
(sail used during bad weather)

'test canvas' is the wordplay.
'test' becomes 'try' (synonyms).
'canvas' becomes 'sail' (synonyms).
'try'+'sail'='TRYSAIL'

(Other definitions for trysail that I've seen before include "Small piece of rigging" , "piece of canvas" , "Small strong canvas used in stormy weather" .)

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

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