I had one on my BMW F650 ST. One day, you'll see an arm there without a possum scraper on the end. It will take a couple of moments to realize it fell off. You've got a rear fender, so a shock sock for $21 to usa anyway is all I think is effective. A full rear plastic fender would be nice, but it would be a lot of engineering. Gravity and possum scrapers don't mix, unless you want to get one every now and then when they fall off and break in different places. But they do look cool! Nice job for all of your work.