[Perfectlap]

I was at my Porsche body shop this weekend and they had a powder blue Gallardo spyder with matching powder blue wheels. Purty nice...

as for your budget car (boxster) and I guess the same applies for all canvas tops don't let any detailer wash the top with soap. Rinse only(frequently).
Use the Raggtopp Cleanser every other month if its outside every day. Spray the Raggtopp Protectant on it afterwards and reapply after each cleansing.

For drying don't use cloth towels. Get one of those absorber rubber towels from Pep boys. Works great on glass.
I use the lint roller when the neighbohrhood cat makes a visit.