Tips for safely closing your cottage or trailer. Written by Laurie Chambers on 9/26/2017 8:55 AM in Cottage, Trailer, RV, Closing, Tips, Summer 2017, Winter 2017, Winter 2018. It has 2 Comments. The top two cottage and RV insurance claims are due to damage caused by water and wind during winter and early spring. What can you do about it? We have 6 tips to help you safely close your cottage or trailer.