Current description of water-skier, perhaps (8)
I believe the answer is:
undertow
This clue is a double definition.
'current' is the first definition.
(undertow is a kind of current)
'description of water-skier perhaps' is the second definition.
(Other definitions for undertow that I've seen before include "Ebbing current" , "Current beneath breaking wave" , "Current beneath ocean surface" , "Back-draught of a wave" , "Current threat" .)