I bought my first camper in April 2018 and soon came across it. But with all the other first time purchases I've put them aside for now. Also, I already had several different wheel chocks, so I wasn't concerned about safety. Then, as I was getting the camper ready for the first ride of the year, I noticed that it rocked more inside with my dogs. these are no longer puppies! So I decided to try them and went ahead and got them. and I'm using it on my first outing right now. To be honest, I'm not