A bait ban was proposed to Metro Vancouver Parks, as it would almost completely eliminate any angling conflicts with Western Painted Turtles. (Yes, there has been reports of turtles showing an interest in artificial lures but it seems bait is the main culprit in the rare instances of turtles being hooked).
The bait ban proposal went nowhere, I suspect because it wasn't a "fishing ban", which I believe was the goal and the "turtles" were the means to that end.
In Minnekhada, the area exposed to angling is 2 small stretches of dike, probably way less than 5% of the pond, so angler conflict with turtles would be restricted by that and with a bait ban would be even lower, approaching zero. They didn't even want to try it, as they were set on a fishing ban. As "DJT" would say "sad".