Mine, I don't clean as good or as often as some do. I have a friend that washes and cleans every time the bike goes out. His has 80k and looks new. He tells me it's as clean underneath as a set of angel draws.
Does any body out there even HAVE a spare riders backrest pad. I have a spare modified set of the hardware, but no pad. The passenger backrests are still out there, but no rider ones.