You'll need to get the Hot Maps (Navionincs) for Canada. Nipissing is on there except west of HWY 64. As soon as you go under the bridge, it looks as though you're on dry land but it'll still show your trail.
Good morning Stan. The best thing that I can suggest to you is to google "tackle underground". Go the the soft bait forum. You'll be amazed at the help the dudes will give you there. It's probably the best bait making site in the world. Lots of our community members are there as well. Give it a shot.