'Wing' canoe paddles?
 

Just wondering, given that 'wing' kayak paddles are meant to have improved
the speed of sprint kayakers by 2%, has anyone ever cut a wing kayak paddle
in half, put grips onto the shafts and gone out in a tandem canoe?

Clearly, canoe paddlers need to be able to apply a great variety of strokes,
including cross deck strokes, and the 'slicey' nature of a wing paddle makes
it difficult / impossible to scull with them, use Duffek technique etc.
Also, wing blades need to move sideways with every stroke for maximum
effect, and that may introduce a turning momentum in a tandem canoe, as bow
and stern paddlers have different leverage, and correction strokes are again
impossible with a 'wing'.

Anyways, given how intense some canoe racers are, and keen to shave the odd
second off here and there, I was wondering if it has ever been tried? Maybe
with different size wings fore and aft?

C.