Was wondering where the best place is to buy them, and how hard they are to install them. We asked at two different dealers and neither said they install them. Didn't even seem to be familiar with them.Not sure we can do it ourselves. Also, wondering if anyone didn't think they worked to make it solid. The xchocks recommended and the tri pod don't seem to be the answer. Would love to be sure they work before purchasing, since they are not cheap. Glad to hear you thought they worked.