Ok, Ok, OK,
Hands up - I've got a fish finder.
1. Only ever used it when fly fishing once as it was bought for trolling from the inflatable or Canadian. A fish finder / depth sounder is almost essential when trolling if you are using any kind of sinker or diver as you MUST know when to raise the terminal tackle or lose it.
2. They do work but won't catch you a fish. All they do is let you know you are not fishing in a fishless area.
3. If you're getting clutter at mid depth, the finder is probaby set up wrong or malfunctioning.
4. I'll bet there are more folk on here who've got one but ain't prepared to admit it. I believe a few comp boys were interested in one a while back in order to " map the depths and contours " of course.
This isn't supposed to be inflamatory, but I know some guys will object to them from a traditionalist point of view. However can an analogy between the Browns / Bows argument not be drawn wherein if it is legal then surely it's a personal choice.
Which is why of course, the topic starter is perfectly entitled to adopt the position where he will never use one when fly fishing and I respect the stance he has taken on the subject.