Spa gets in poolside bouncers (12)

I believe the answer is:

springboards

'poolside bouncers' is the definition.
(bouncy boards by a pool)

'spa gets in' is the wordplay.
'spa' becomes 'spring' (I've seen this before).
'gets in' becomes 'boards' (boarding is a kind of getting in).
'spring'+'boards'='SPRINGBOARDS'

I've seen this clue in The Telegraph.

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