Crossword Genius

What punter may do to celebrate (4,3,4,3)

Ross

I believe the answer is:

push the boat out

I'm a little stuck... Click here to teach me more about this clue!

'celebrate' is the definition.
(I've seen this before)

'what punter may do to' is the wordplay.
I cannot really understand how this works, but
'do' could be 'ut' (synonyms) and 'ut' is present in the answer.
'to' is within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for push the boat out that I've seen before include "Punters may" , "launch" , "A lifeboat crew may" , "get ready for a row?" , "Entertain or celebrate lavishly" .)

I've seen this clue in The Sunday Times and The Times.
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