This is a very interesting thread. I was recently fishing the Tweed on a £5 trout ticket and "accidentally" caught a lovely wee springer, right opposite the Ladykirk beat.
Yes, Yes I know its not really PC, but I justified it by the fact that I couldnt afford to pay the tweed salmon prices, all fish would be returned, and so as long as I had a ticket of some sort .........
Well The Ladykirk ghillie was most annoyyed at this and promptly snagged my setup.......... leader too thick and apparently a thunder and lightening on a gold double isnt a brown trout fly!!

Then the water bailif came down and I was threatened with prosecution.
Hand in the air, I accept I was completely in the wrong........ damn good fun though.
So yes, I'm most interested in the troutiest flies folk have used to catch salmon.
Rod