Transport Canada which is equivalent to US Coastguard just confirmed all efoils with a propeller open or ducted are banned in Canada because of safety. $300+ fine every-time your caught using one.
Jet surfboard and the Jet eFoil are allowed.
TRANSPORT CANADA
Standards Regulations Officer/Agent aux normes et Réglements
Small and Fishing Vessels, Design and Equipment Standards and Boating Safety | Petits bâtiments et bateaux de pêche, normes de design et d’équipement et sécurité nautique
Marine Safety and Security | Sécurité et sûreté maritime
Transport Canada | Transports Canada
330 Sparks St. 330, rue Sparks
Ottawa (Ontario) K1A 0N5
Telephone | Téléphone 613-991-1367