I should have written this post myself!! Last year I foul hooked two fish when fishing dry May flies. I was given two different sets of advice from people who know a lot more than me. Firstly, if you're fishing two drys, watch the other one for signs of movement before striking, and secondly, when you see a rise, just figure of eight retreive and the line will tighten if they were ever serious about taking it. One thing I have learned about dry fly fishing is that a rise and apparent "take" could well be just a close look and downright refusal !! There are hundreds of times a fish looks very closely at your wet flies or nymphs and then says NO!! Same with drys as far as I can see so far. One last thing, I had a fish rise to a daddy long legs, the fly balanced on the end of his nose as he pushed it about three inches out of the water and then proceeded to set it back on the surface as if it had never been disturbed

.....I'll never forget it. A rise is not necessarily a take, just an expression of interest