Some people make complete aluminum backer plates the same size as the plate, but I haven't had any issues w/ vibration induced cracks on my plate at all w/ the small adapter I made. A full plate sized aluminum adapter would be nice to offer folks, but then plates are different sizes in different states. My West Virginia motorcycle tag is much smaller than Maryland's motorcycle tags. I wasn't so much worried about blocking any info. on the tag itself, it's just much more sano looking to make a bracket than drill extra holes in the plate. Bleah.