That hatch starts slow, picks up and is strong for a couple of weeks and will die down but continue a couple of weeks after. It is just getting started. I was just in Port Clinton this evening and saw very little sign with a stiff North West breeze. That breeze will blow them in and cover everthing white in no time at all. I would imagine this weekend will be unreal for the hatch. Fish are still catchable, it just takes a little more time. The current conditions set up a nice evening bite. Full moon and mayflies. Fish till sundown if you can. I have had some of my best fishing during the peak of the hatch by running North to a rocky bottom. The North side of Pelee can be red hot during the hatch. Its deeper, colder and rockier. Perhaps not as many to hatch. This is also a time of year when we hear of many "dropped" fish. The hook to land ratio drops due to a softening of the mouth tissue that happens this time of year. I think it is a combination of, post spawn, forage, water temp, growth, migration that cause this to happen. Go light on the drag, slow or stop the boat to land, keep hook tips sharp. Don't horse em.