I refrained from saying this earlier but after an eight hour float I figured what the ****.
On this forum and most fly fishing forums fish size is exaggerated more times than not. I don't believe it comes from a desire to deceive more so a lack of experience measuring fish.
Based on what I have seen in the forum world, it is entirely possible what appears to be a slot fish could easily be a legal fish, based on some of the claims I read weekly around he interwebs.
All too often a 12" fish is called 16", and 14" fish are called 18". I have seen folks with solid 13" fish which could appear as slot fish, but are just short.
Just something to keep in mind before causing a scene. Maybe it is time for a picture quiz?