Try way to hold duck that is extremely sticky (7)

I believe the answer is:

gooiest

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'extremely sticky' is the definition.
I can't judge whether this definition defines the answer.

'try way to hold duck that is' is the wordplay.
'try' becomes 'go' (both can mean an attempt).
'way' becomes 'st' (abbreviation for street).
'to hold' means one lot of letters goes inside another.
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
'go'+'st'='gost'
'o'+'ie'='oie'
'gost' enclosing 'oie' is 'GOOIEST'.

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I've seen this clue in The Independent.

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