I was fishing the South Fork of the Sno this morning and the water is really low.....getting the usual little 5"-8" guys on para-adams and EHC. I put on a really small stimulator I tied up to see if I could weed out some of the smaller fish, as I didn't have a bigger ECH or para. I tossed it up tight to a big downed tree and the water exploded, line took off.....It didn't have a lot of room to run and it circled around in front of me and shot out toward the log again....I tried to pull it out from under the log and it wasn't having it. It came up and flopped over; I saw a huge fat side with deep red, and then its tail flopped over and was the size of my open hand easily....speckled...just huge...then it popped off. I kind of stood there wondering what the heck just happened. I move up stream eventually and caught a ton more little guys, but also got two more rainbow that just eeked over 13" in deeper pools by uprooted trees. I was surprised, as this is pretty odd for this area. I have heard others saying they have caught bigger fish recently up there too.....just wondering what has changed.....and where the heck that brute came from?