It's a shame that the MNR is not more technology savvy. There is no reason why they should not have a real-time interactive guide that is GPS enabled that provides all the details you need in exactly the position you are in (or in any position you point to). This could be a google maps overlay, or something you can load onto your chartplotter (i.e. garmin, huminbird etc...), or a GPX waypoints file for download etc...
Their current site - FishOnline - already has all the info, but they haven't integrated anything and forces you after picking a region to still look through all the exceptions, additional fishing opportunities etc... I'm new to Ontario, so all these area are not familiar, and it drives me nuts... ie. recently was trying to figure out on the grand river - am I between these two points and one of the references was ambiguous as it refers to a road reference of which there are multiple roads in Ontario with the same name. There is no reason for it anymore which is the sad part and would make everyone's livers much easier.
I agree with a lot of the discussion above - when the boundary reference is listed as the line between two widely separated points, and one of them is not a regular reference point on a chart that you can draw a line across, then it is really tough when you are in the middle of the line to judge whether you are on one side or the other of the line. Throw in bad weather conditions, or the fact that you want to have your chartplotter zoomed in to see the bottom details of where you are at and you won't be able to see your position relitive to reference points that are off your screen. Yes, it's your job to know, and yes, people have been getting by for years, but there is no reason it should be that hard... Evolve with the times MNR!