If you don't already have one, the best 15 dollars you can spend is to get a foam kneeboard from your local hardware store or home center.
You'll be much more inclined to do a good job when cleaning the lower fairings, or working on the bike when your knees are not on the concrete.
You'll be much more inclined to do a good job when cleaning the lower fairings, or working on the bike when your knees are not on the concrete.