Power in early woodenheaded golf club (5)
I believe the answer is:
spoon
'woodenheaded golf club' is the definition.
'power in early' is the wordplay.
'power' becomes 'p'.
'in' indicates putting letters inside.
'early' becomes 'soon' (I've seen this before).
'p' going within 'soon' is 'SPOON'.
(Other definitions for spoon that I've seen before include "Piece of cutlery" , "fellow eloper during high jump event" , "Indulge in sentimental courtship - eating utensil" , "Bowl with handle" , "One with bowl" .)