Who might paint rocky strait (6)
I believe the answer is:
artist
'who might paint' is the definition.
(I know that artists often paint)
'rocky strait' is the wordplay.
'rocky' is an anagram indicator.
'strait' anagrammed gives 'ARTIST'.
(Other definitions for artist that I've seen before include "Strait (anag)" , "Painter, sculptor etc" , "Bacon, for example?" , "eg Monet" , "Creative or skilful person" .)