We had slide toppers on first camper but not on new one! The long slide was 16' and pooled water. We had to get the water off or the topper would fold over and be pulled inside the camper when retracting. Tried most of the solutions mentioned and they didn't work for us. There was a small window above the large slide that may have caused the topper to be installed at too flat an angle. Also the smaller slides especially the bedroom one would make a lot of noise in high winds. One night in south Texas, we pulled the slides in so we could get some sleep. Others in the park in Texas had ropes over the toppers to help with the wind getting under them and making noise. I like the concept of toppers but will not have them on another camper. JMHO.