I have friend that I grew up with. We've known each other since 3rd grade. I tie him egg sucking leeches and send them to him. He fishes them with a spinning reel and a couple pinches of weight a foot or so above the fly. He does so with much success. He fishes them in a similar manner that I do with my Switch Rod. It is interesting, I use a section of T-whatever to help get the fly down and use about 2-3 ft of leader below it. He uses a little pinch weight. I know when a fish has taken the fly by watching the floating section of my fly line and when it does something fishy, or I feel the tug on the line. He knows when a fish has taken his fly by watching where is mono enters the water and by the feel of the tug/tap on the line. The only real difference here is the reel and what material is on it. The difference are mainly aesthetics with the exception that he can fish that seam on the other side of the fast current much more effectively than I because his line does not get swept down current and pull his fly out of the sweet spot. I have no interest in fishing his way and he has little interest to fish mine. I have little doubt that either of us would have much difficulty learning the others methods, but we just don't want to. To me, if I fished his method, then I wouldn't be fly fishing and to him he doesn't see many difference between his method and mine because we both fish flies and get them down with weight of some sort. He've both understood this from day 1, but have never needed to debate over it. We understand how each other feels about it and completely accept it.