Zenneth became a director of the Saskatchewan Canola Growers Association in the mid-1980s, during which time he worked on various committees, one of which was to establish the Saskatchewan Canola Development Commission that administers a check-off fund from canola producers in Saskatchewan.
Zenneth est devenu administrateur de la Saskatchewan milieu des années 1980, période durant laquelle il a travaillé dans divers comités, dont l'un visait à établir la Commission de développement du colza de la Saskatchewanqui gère un fonds des contributions des producteurs de canola de la Saskatchewan.