http://www.getkayaktive.com/ - The YAK-A-LAUNCHER™ utilizes a series of Nitrile-padded rollers between the heavy-duty roto-molded (HDPE, UV stabilized) pontoons that keeps your boat from being scratched or damaged. The rollers ARE NOT on an incline (you just can't paddle up a ramp!), making entry and exit simple and easily performed without assistance from others! While in the Launcher, the boat simply cannot turn over!!