In my defense, this bike with 29x1.6 tires:



and this bike with 26x1.25 tires:



are using the same fenders. Notice how they match the curve of the wheel on the Muirwoods, but don't quite come halfway down the rear wheel. I always ended up with a PNW racing stripe using those things. I'm not sure what they're good for.

I recognize that I have some culpability here, but mainly I blame the manufacturers who refuse to make a decent fender for skinny 26" tires.