Said what VIP spotter will do is fine in the main (9)
I believe the answer is:
seaworthy
'fine in the main' is the definition.
('the main' is a historic nickname for the sea)
'said what vip spotter will do' is the wordplay.
I cannot quite see how this works, but
'vip' could be 'worthy' (I've seen this before) and 'worthy' is located in the answer.
The remaining letters 'sea' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'is' acts as a link.
(Other definitions for seaworthy that I've seen before include "Able to endure stormy weather" , "Safe to sail in" , "(Of ship) fit to set sail" , "In a fit state for ocean voyage" .)