Trust me.... I am in the biggest slump ever and it sucks.
It happens to everyone once and a while.
If you mind me asking, do you adjust your float depth or check your presentation? I've seen a lot of people who keep fishing the same run of water and never adjust anything from how they drift to the depth of their presentation.(I constantly adjust by 2-4 inches with every 3-4th cast till my float does the tilt/ rapid bob indicating I've touched bottom, at which I'll move upwards to stay off bottom) I know I had one guy get frustrated a week ago cause he was fishing the same run but he didn't hook anything, we both fished roe but I adjusted till I closer to the bottom and did a dead drift, landed a very nice wild coho on my 5th drift.
Don't take it the wrong way, just trying to give some advice that can help as I know how much it can suck going away without a single hit when everyone else is getting something.