Do you get sick of towel flurd munging up your top; particularly dark ones? Those roller lint removers do the job I suspect. Cheaper and just as effective if not quicker is a big roll of cheapass clear packing tape which you just stick row after row of on the top and then peel off.

Fink
Denver

 

Interesting, thanks for the tip Fink

 

Try using a vacuum cleaner at a car wash/gas station. Also, once a year I like to spray 3M scotch guard on my top for added protection and less fluff sticks to it. Lastly, I don't know if Porsche dealers sell a convertible top cleaner, but the Mercedes Parts dept.s sell a pretty good conv. top cleaner.