Its not a matter of a boater being different than a wading angler. You are both the same, you are both fishing. You don't fish in another person's water. Where I learned to row a boat on the steelhead rivers on the coast, if the river is not really wide, you typically try and drift behind the bank fisherman if they are waded out far enough to give you room. Now, this would mean that a flyfisher might not have room to backcast for a few seconds, but it is better than disturbing the fish, although i think steelhead are more particular about boats than trout. I have done this a few times on the Bow, but I usually get weird looks, or the guide boat behind me takes the faster current right in front of the bank angler, and then I am directly behind him as I move back into the current. So now I just usually pass on the farthest side. A funny one you run into here on the Bow sometimes is when bank anglers are on both sides. The river is just wide enough that you could consider the water to halfway in the river being the water the bank angler is fishing. In this case, the best thing to do is just pass down the middle of the river as best as possible. And pull your lines. A boat drifts along pretty fast and you are out of the bank anglers water pretty fast. Another thing. An angler with a fish on the line has the right of way over any other fisherman, whether in a boat or on a bank. You can complain that they should know how to control the fish better to keep it out of your water, yadda yadda, but regardless, that person has right of way. Maybe someday when they have handled more fish, then they will be able to, but until then, you should just smile and wave and say good fish.