Removing the top is relatively easy, as designed by Porsche. However, since we rarely have rain around here, I wanted it to be REAL easy.
I ordered a set of five 5/16-18 clamping knobs (star shaped) from Amazon for under $10. They replace the normal acorn cap nuts and allow you to totally remove or replace the cabrio in under 2 minutes with no tools. Not everyone's cup of tea, but it might scratch someone else's itch.