Hey /out/ my girlfriend and I just picked up a pair of 9 ft perception kayaks! We are pretty excited as they are our first kayaks, and can't wait to get them out in the mn boundry waters and great lakes. However, before we take them more than a few miles from home I need a roof rack for my subaru wrx wagon. It has stock siderails (see pic) but no crossbars.

So, what make or style of roof racks have you had a good experiance with? Keep in mind I will be carrying two kayaks, I've strapped one down right to my roof with no problem but to carry two I need something more.