No matter where we park, the slide roofs need attention before we bring them in. Either they are dusty, in the desert, or they are covered with twigs and leaves, in the woods, or they are wet from rain. Slide toppers might help with this, although I have heard that they tend to make noise in high winds, sag over time, and sometimes end up with leaves and twigs trapped underneath.
Mark has a long handled squeegee he uses to get the water off, a broom for the leaves and branches, and a California Duster and/or broom for the dust. Getting up on the roof is also useful for checking out all the rooftop items like hatches, TV antenna, solar panels and wiring. His favorite cleaning tool for all this is a telescoping scrub brush that we used for cleaning our boat.