Clue: Ellen MacArthur's craft headed up island on blowy night (8)
Answer: YACHTING
Explanation: Definition: Ellen MacArthur's craft
 **Reversal of**(headed up, in a down clue) CAY(or key/a small low island made of sand and coral fragments) **placed above**(on, in a down clue) **anagram of**(blowy) NIGHT.
Defn: Ellen MacArthur, the solo yachtswoman's skill/craft in handling an ocean-going craft.