I have a total of 7 rain spouts on my trailer. I cut a slit in tennis balls and pushed them onto the spouts. When rolling the cover over the sides of the trailer from the roof, the DW would pull the cover away from the sides to let it fall properly without putting weight on the spouts/tennis balls. Have used it through 2 winters so far without any incidents.
Randy and Patty
2015 Sabre 33 CKTS-6 Platinum Edition
Reese 16K Slider hitch
2014 Ram 2500HD Crew Cab 6.7 Cummins Diesel