I have the answer, sunworshipper, from the anagarm of "i spurn shower p" but where's the clue? Put another way, why is the answer sunworshipper other than it's an anagram
11d I spurn shower cavorting around plage primarily (13)
CAVORTING suggests an anagram of 'i spurn shower'
AROUND indicates that should be put outside of...
PLAGE PIMARILY i.e. the first letter of the word = P