I have tried BioFlex, all sorts of stuff and ultimately it just comes down to having knees that are wearing our from years of jumping, falling, sliding and pounding this almost 6' frame around. Two surgeries took most of the cartilage in one knee, so no amount of "lube" is going to grow that back. All I can hope for is in the 10 years from now it will take for my knees to be completely gone, I can get a cartilage replacement and not a full knee replacement and get back to full activity.