Actually I do 'believe in' irregular washes as commercial car washes are hard on finishes. I'll make a mark in the sand that washing every week to 'keep it clean' and 'to protect the car' is worse than not washing it, provided one has a good coat of wax on teh car. I prefer to wash the cars with lots water that has a splash of window washing fluid in it, to 'save the finish', but I don't always have the time to do so. I'm trying out Nufinish now, and used Rain Dance for years as it seemed to last longer than other finishes. The Nufinish definately comes off easier, and it seems to even clean better. I noticed that I could keep reapplying it in an area and letting it dry, until the buff rag came out clean. Anyway, I'll see how it lasts.