BigStack

My son has a big stack with 4 kayaks. I've also purchased a big stack and mounted same on my trailer with 4 kayaks. Works very well!
Collected on Yakima.com

We recently purchased four sit on top kayaks and were very excited to take them on vacation with us. We loaded up our Durango with all our stuff and the kayaks strapped to roof with our brand new BIGSTACK. First time we have used it. We end up driving through some of the craziest winds! It was blow at 40 mph and gusting up to 60 mph, this was during spring break week in Indiana to South Carolina. But the BIGSTACK held them tight and had no issues with kayak traveling. Have used it several times since then in a lot less wind! Great product!
Collected on Yakima.com

I've had this for a couple years now, works great! put it on a 2013 naked roof Equinox. 60 inch bars with Q towers. I have had 4 kayaks on it many times, 3+ hour road trips, including 65-70 mph highway. I suggest following the instructions - the way you wrap the kayaks to the bigstack and spacing of the Q towers. I marked my roof with nail polish, so it was easy mount next time. Also love the straps that have rubber coated buckles, its a must when you toss the buckle around on your ride. I have loaded the racks, 4 boats, by myself, no issues. When I know I'm going on a highway, I use the bow line secured under the hood - doesn't scratch my hood, and keeps the boats steady.
Collected on Yakima.com