Yep, Yakima makes a great rack, but they are somewhat pricey.
I got my rack from Performance Bikes and it has been working fine for the last five years and I have used a cargo carrier on it too. My car does not have any gutters on it and the rack has been on there ever since without any problem.
Go to
www.performancebike.com and see what they have under the Xport racks. I am not sure that they have something for kayaks, but if they do the rack will be cheaper than a Yakima.
However, the Yakima is a great rack with probably more applications than the Xport. Another company that makes a rack is Thule. You can probably do a search on that one and it will bring plenty of hits.