Drill those two holes (or even just one) in the fender and use a piece of alu to make your own bridge (for the two hole option) or just use a small p-clamp for the single hole.
Yes winner! one hole, one p-clip, one mysterious (perfect) wafer head bolt (dome with a washer like flange), one nylock, one wrap of self amalgamating tape +3 hrs of excessive swearing...
Drill those two holes (or even just one) in the fender and use a piece of alu to make your own bridge (for the two hole option) or just use a small p-clamp for the single hole.