Sounds like an awesome time! I have not fished the Yukon, but I reckon if you throw something shinny at em, you will get hooked up. I'd fly fish the streams, but there is a learning curve there. From the canoe you can toss out spinners or cast masters. Paddle slow and try trolling with a ton of line out and a phoebe or a super duper. Always tie your line to a swivel, then a leader to your lure. I use a chain swivel for trolling and barrel swivel for casting. Silver lures in clear waters and gold in murky is my go to. If the fish seem to be hitting on the top, and you have no fly rod you can tie on a clear bobber then leader down to a small dry fly. A lot also depends on what species you are hunting. That said, most of the slimy little critters with hit something shinny. Check regulations on hook barbs, get a net and buy some long nose pliers for hook removal. I use hemostats to clamp on the hook while the fish is in the net to minimize touching the fish for catch and release. If you are gonna eat'em, make sure to cut the gills and bleed them out for a fresher tasting meal.
Good luck and enjoy!!!!!