Cunning tips from several rowers (7)
I believe the answer is:
sleight
'cunning' is the definition.
(I've seen this before)
'tips from several rowers' is the wordplay.
'tips from' says to hollow out the word (remove centre letters).
'rowers' becomes 'eight' (eight can mean a crew of eight rowers).
'several' with its centre removed is 'sl'.
'sl'+'eight'='SLEIGHT'
(Other definitions for sleight that I've seen before include "Hits leg (anag) - cunning" , "Conjuror uses this" , "Artful trick" , "Trickery" , "It's deceiving to the eye" .)