Had water pool on the slide on our trip last weekend, I went on the roof and squeegied the water off, along with the branches, leaves, etc. Dealer did say water may come in with the slide, recommended just to wipe it up after the slide is in, however I don't mind going on the roof. I also have an extension pole for the squeegy, use on the awnings clean them of debris before rolling them in.
2015 Ford F150 Lariat 5.0L
2012 Jayco White Hawk 31 dslb