I just got back from a 3-day trip to the SoHo. This is kind of a regular trip we take, and I was very surprised to see the number of anglers out there beginning on Thursday, and increasing each following day. Water was a bit higher than normal, but still very wadable.
I talked to an older gentleman who has fished the river for two weeks consecutively for each of the past three months, and he said that the past two days have been the best sulfur hatch of the year. I wasn't fishing with him, but his fishing partner told me that he probably caught 70 fish to his 15. Sure enough the old man showed up and said he probably caught 80 fish in 4 hours of fishing. He showed me his fly, and it definitely had been abused.
It was very hit-or-miss for most people on the water. I saw and talked to lots of people who were skunked. I probably averaged 25 trout/day swinging flies. Mornings were very good swinging soft hackles in the seams and riffles. When I say soft hackles I am talking #20 BWO emergers or midges. Mid-day from 10AM till 3PM was pretty much dead with the ocassional fish being taken. From 3:00 on is when the magic began. However, it only was magical if you had the exact fly imitation. Thankfully, I got into them yesterday taking a #18 medium yellow sulfur w/ bleached deer hair sparkle dun pattern. I tried two other shades of sulfur, and both bleach and natural hair wings before finding the one that worked. So, I spent an hour trying to find the right fly, but once I found it the fish were taking it so hard that I had three swallow the fly. One brown actually jumped out of the water and ate the fly as he was entering the water. I fished that fly in two runs for the last hour of the day. I was probably on a 20 trout/hr pace with the fly I mentioned above.
This morning was nuts! People were walking in on top of each other, and I just chose to pack up and come on back home. That is not my cup of tea. I even saw quite a few bait slingers today out there keeping anything with size to it. However, I think the sulfur hatch up there is just now getting ramped up. Be advised though to take a wide variety of sulfur patterns in different shades of yellow, orange, or some combination. Those trout can be some the most finicky I have ever fished for. If you go good luck, and happy Father's Day!