Have not had a need to jack up my C7, and I do have a drive on lift for undercarriage access, but, just wondering how many use the readily available jacking pucks on their cars or use other means/material to place on the rails instead of the 'pucks'. In my simple mind, a low profile jack and a suitably cut piece of 2x4 should serve just as well.... am I missing something here? I was just about to order a set of pucks but woukd be interested on your POV's Thanks