I like to fish by boat. When I'm lazy I tend to troll with different lures while I'm putting along the river or lake. It was this combination of sport fishing and laziness that spurred my interest in routes that connect different bodies of water.
If I were super rich, I'd hire a captain to guide a house boat on the following routes while I chill on the stern of the boat with a fishing rod in the rod holder and a beer in the cup holder... just waiting for the next fish to hit, all while taking in the sights of different towns and landscapes along the way.
Not many people do these routes as it's very time consuming, but my retired boss did do the Trent Severn last year when his friend bought a sail boat in Penetang and took it from the harbour there out to Trenton and then west to Whitby (next to Oshawa). Looked very cool after seeing all the pics.
Just going through all the man made locks and canals would be pretty cool to see. And the marine rail at Big Chute in Muskoka is awesome to watch in action:
https://www.tripadvisor.ca/LocationP...t_Ontario.html
Being stopped by a cargo ship at a lock or lift bridge or what have you is a massive inconvenience, but it is interesting to watch when a big ass tanker passes by, whether it's on the Welland Canal, St. Lawrence Seaway, Rideau Canal or Soo Locks to name a few.
It's pretty awesome that you can travel so far inland or near land by boat. BC has lots of opportunities, not just on the coast, but up the Frasier. Seen lots of fishing shows take place there.
Same with east coast.
Not sure how navigable rivers like the Saskatchewan, Bow, Assiniboine, Red or Ottawa are. Can definitely canoe them with portaging, but no idea how far motorized craft can go.