I do a ton of fly fishing out of a canoe, in fact I am not sure that I know how to cast a flyline in any oher position than sitting in a canoe! As far as equipment goes, a long flyrod will definitely help in picking the line up off the water and going into a soli back cast. Other than that, you need to learn to cast while keeping you weight centered in the canoe. I have a friend that goes on a small mouth trip with me every spring, we both fly fish out of my canoe and the canoe barely moves as we cast.