I got the SKS X-Blade Dark Rear Quick-release Fender.
The X-Blade Dark Rear Quickrelease Fender features two points of adjustability to work with endless frame geometries. X-Blade is perfect for suspension bikes. SKS wants you to get out and ride - no matter what! Dual compound plastics are hard in the middle for durability and softer on the...
sks-us.com
Looks like yours is even shorter. I've tested out the SKS, and it almost completely does the job. I don't get any spray on the seat or my behind, but I get some splash up high between my shoulder-blades.