Yup.....just sitting on it keeps it looking its best!!
Seriously.
I wash, when needed, in a shady area using a McGuiars car wash product. I forget the name, but it is 'friendlier' to the finish than dish soap.
After a thorough drying (with a micro fibre towel) I apply S-100 cleaner/shiner. This prod is the best I've used thus far. Leaves a glass-like finish. Two-three times/season I use the S-100 wax to seal and protect.
If I'm feeling super ambitious I also go over the plastic parts (front fender, signals, mirror backs...all of the non metal, non-body parts) with a McGuiars plastic cleaner (similar to the ArmorAll wet-wipes). I find it brings out the black again, adds some shine and they claim it protects from UV damage - which I think is what dulls the plastic. It works very well and lasts me about 2-3 weeks.
This system work for me as I've been asked if the bike was brand new by on-lookers.
07 R12GS - Granite
04 R1150R - Black (sold)
Member #468