I couldn't bare to see them slap state & county stickers on my pretty gold fork down-tube of my new Busa so I picked up a generic 6"x3" stainless steel plate (1/16" thick) from the local bike shop thinking I could figure out some way to bolt it to the fork. Unfortunately I couldn't figure a way except to use the caliper bolts, and I didn't want to chance messing with those.
I finally decided I could use the bracket for the left front reflector! There's two holes in the reflector bracket, one for the reflector and an extra hole. I put a 4-440 bolt and nut through that extra hole to keep the plate from slipping, and reinstalled the reflector using a bit of blue locktite on both pieces of hardware. With two pieces of hardware holding it, it made for a pretty stable mount. And since it's edge is pointed into the slipstream, it shouldn't offer up much wind resistance either. I plan to cut the plate down to an exact size for both of my required stickers.
Damn... I knew those reflectors would come in handy for something! For those of you that hate the reflectors, just use the reflector bracket, and two bolts, and you've got it!
There are old pilots and bold pilots. But there are no old, bold pilots.