Re: i know this will sound retarded but ..
Or do what I did.
When you take off the stock fender, there is a metal bracket inside the top that bolts to the bike. Take that out, it looks like a U. Bolt the bracket to the bike with the two bottom holes, then the other to on the "wings" (i'll call it that) you can flare out to the holes in the plate. Or drill new holes in the plate to match these.
It's free and easy.
Here is a quick sketch in Paint of what the bracket looks like.
2001 R6 Frame Sliders - Swing Arm Spools - Tank Protecter - Pit Bull Stands - 6000k HID's - Proton Flush Mounts - Integrated Taillight - 520 DID Chain and Sprokets - Double Bubble Tinted Wind Screen - CRG Levers - Spiegler stainless brake lines