The Charter of Rights isn't going to help you if the CO has 'reasonable grounds' to pull you over and spot check you. In this case, maybe it's you pulling a boat, or perhaps you've got tinnes on the roof and a trailer full of muddy ATVs a few days after moose season. Why do you think they need evidence that you've broken some kind of law in order to pull you over? It's spelled out pretty clearly below.
89 (1) A conservation officer may stop a conveyance if he or she has reasonable grounds to believe that stopping the conveyance would assist in determining whether there is compliance with this Act or the regulations. 2009, c. 33, Sched. 22, s. 2 (22). Operator to stop (2) On the conservation officer’s signal to stop, the operator of the conveyance shall immediately stop and produce for inspection any wildlife, invertebrate, fish, document or other thing requested by the officer for the purpose of this Act. 1997, c. 41, s. 89 (2); 2009, c. 33, Sched. 22, s. 2 (23).