I was driving in very windy conditions going about 60 and was constantly watching the kayak out of my mirror and it seemed to be pretty stable. The only thing I recommend is to ...
I have used the rack only once and it held up very well. I have a Pompano 120 fishing kayak that I secured to the racks. This kayak is somewhat larger than regular kayaks and I was impressed with the stability. I was driving in very windy conditions going about 60 and was constantly watching the kayak out of my mirror and it seemed to be pretty stable. The only thing I recommend is to buy some heavier ratchet straps. I didn't even use the straps that came with the racks, they don't have a ratchet set up, are to small and wimpy,  and at first glance don't seem very trustworthy. The next test will be a long road trip with two kayaks!
Rating: 4 stars