>>534315I live in a tropcial/sub-tropical area, but this is based on my fairly vast canoe-camping-fishing experience - the details are probably not applicable to you, but the general principles are pretty universal.
I usually troll a line behind me while paddling, usually catches me a fish or two per trip.
Keep an eye out for fish activity all the time and cast at anything that acts carnivorous: small bait fish jump away from something, striking the surface or excessive splashing. Jumping fish usually are not carnivous (near me at least). Don't waste time casting at nothing, just paddle down stream and wait until you see something: you'll be on the water for days, you'll see fish eventually. Be kind of picky so you don't waste too much time not catching anything. If 5 casts gets you nothing, paddle on.
I also set a catfish line up once we make camp for the night - just pull you canoe onto the beach a wedge your rod behind a seat, tie it up for peace of mind, cast it out and make dinner. I got a bell so I can hear when a fish is on. Hotdogs are good for food and catfish bait. Not sure if you have them in Scandinavia, but you probably have some sort of bottom feeder this would work for.
Ask a local bait and tackle shop what works on that river. If you're friendly, they'll usually give you some pointers on good baits or lures.
Usually carnivorous fish like some sort of structure: a downed tree, ledge, culvert, mouth of a creek, or even just a river bend. This really depends on the species in the river, but most like to sit and wait for food to come by and don't cruise open water, but some do...
Be aware of game fish laws: you probably need a licence and there are probably size and bag limits.
