What's the noun for canoeists? Here's the word you're looking for.
canoe
A small long and narrow boat, propelled by one or more people (depending on the size of canoe), using single-bladed paddles. The paddlers face in the direction of travel, in either a seated position, or kneeling on the bottom of the boat. Canoes are open on top, and pointed at both ends.
“Those people who have a meaningful relation to that body of water — whether it be a fisherman, a canoeist, a zoologist, or a logger — must be able to speak for the values which the river represents...”
“A keen sportsman, he plays tennis and golf, as well as being an enthusiastic canoeist and sailor.”
“Though not an avid canoeist, she managed to convince a friend to portage through Riverdale Park one spring for a jaunt down the infamous stream.”
