I could see some Flavs in SFOB, but there was no rise.
So I decided the hopper pattern first.
Although I did hook two big boy by it, they are hooked off again and again! Why? What's wrong?
For the third one, it was a little late to set a hook. But as a result, I could catch it. Though the size was average(16inches/40.5cm), it tugged so strong including fast stream.
Finally I got the reason why I missed so many good ones. It was the timing to set a hook! Especially for the huge hopper pattern, I had to wait until the fish fed it enough. I thought the exciting attack to the hopper could be one cause of early setting a hook.
There are many things which I should learn, but I believe it is one of funs of fly fishing.