Also, switch up the weather you’re trying to fish in. As nice as it is to be out there on a sunny day, cloudy may be better.
Agree with others about the time of day as well.
Sometimes you also REALLY have to dig into the fly box and work through different patterns. Don’t forget the terrestrials like the hoppers and ants. Fish will rise to them even when they aren’t seen to be surface feeding. Flick a nice fat hopper out and drift it over a holding place, a fish on the bottom can see that fat Big Mac coming for a long ways and it’s dang hard to resist if presented well.
Also, you didn’t hear it from me, but try a small mouse pattern. No, really. Very low productivity, but when you do get a fish to hammer it, it ain’t likely to be a small one.
Grouse