We have a small MH instead of a trailer, but we have noticed an increase in the number of trailers of all types being hooked up and driven off by someone other than the owner. So I would use everything I could to keep it safe. Have even heard a several being stolen from public or private campgrounds while the owners were out touring or shopping. Thieves are learning about people that reserve sites, them bring their trailers out and leave them just to hold a site for the weekend. Easy enough to hook up and pull off with no one suspecting anything.