Answer:

canoeist

Answer	Crossword Clue
CANOEIST	Kayaker, for example
CANOEIST	One with a paddle
CANOEIST	Boatman

CANOEIST	One who's up a creek?
CANOEIST	Paddle pusher
CANOEIST	Paddling advocate

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.