bmor , the lightest , tightest , lowest profile fenders are the crud racer fenders they sell at mighty .
65 bux worth of highly engineered plastic that will fit the newest , latest , greatest carbon frames . if you have 5 mm of clearance these will fit . pretty easy on and off using rubber bands and zip ties . i've put maybe 500 km on one set and was impressed enough to buy another set for another bike .
We can do a better solution with p-clamps and the SKS Roadracers with integrated reacharounds. I'm hesitant to sell stopgap solutions with less than full coverage, as clip-on fenders get knocked around every time the bike gets locked up or leaned against something.