I have had these racks for 20 years... The strength is amazing and the ease with which you can take the kayak off and on is a big bonus. I prefer the one piece construction of the rack, for stability, and the extra solid bumpers for protection that this rack offers. I have a Seaward Navigator, which is a long 17 foot Kayak around 55 lbs for those who were wondering if this supports such a size. I have done many 5 hours drives to the Kayak destinations, all that is required for safety is a strong front line to hold the nose against the wind, and secure straps to hold in two places on the two racks. You will have to remove them for Underground parking for malls etc. I found that I can do this in about 5 - 7 minutes.. The clamps are adjustable and fit very well to the car racks, a few different choices for different racks are provided... Best rack for my requirements... Thank you Yakima!