In a busy campground I have felt it isn't much of an issue. I take my honda and put it in the front storage, but anyone with a key can get in. I guess I feel there is enough people around that anyone would notice someone that isn't supposed to be there. When we boondock, typically away from anyone else, I lock it up. I guess I feel anyone who would steel it didn't come there to steel so wouldn't have a grinder or the right tools. So far "knock on wood" nothing has walked away. But I have talked to many whose bikes have disappeared.