Insurance, maybe - but it's full of holes! (6,3)
I believe the answer is:
safety net
'insurance' is the definition.
(I've seen this before)
'but it's full of holes' is the wordplay.
I cannot quite understand how this works, but
'it' could be 'sa' (SA can mean sex appeal, as in 'it') and 'sa' is found in the answer.
This explanation may well be incorrect...
'maybe' acts as a link.
Can you help me to learn more?
(Other definitions for safety net that I've seen before include "this may save one in difficulty" , "precaution" , "It affords protection for those in difficulty" , "Guarantee of security" , "It catches acrobat in case of fall" .)