Get one of those Sherpa roof racks with a detachable side ladder. The rack will probably cost more than the kayak, but your Jeep will look even more cool and you will have gained added utility, all sorts of attachments for the rack, even auxiliary lighting, baskets, all sorts of stuff above and beyond kayak carriers. Some have enough clearance to put the top down with the rack left in place.
boy I could drive an even more butch vehicle with those!
I wanted something that didn’t scream sissy.