"But here is another idea- 9.5 times out of 10 nothing has accumulated on top of my slide, and I don't need to do anything but look to be sure. But looking requires climbing the ladder too. How about a selfie stick for your cell phone so you can inspect from the ground?"
I am with pbounds o this subject When retracting and I want to check, I pull the slide about half way in and then grab a dinette chair or my three step stool and step up and look at the portion of the slide that is retracted along with taking a gander at the rest of it. Ain't no big deal, and the last thing i can imagine is having to climb on the roof of a fifth wheel to brush something off of a slide. :h