[ScowardNJ]

If the Suby has an existing roof rack. Thule makes a foot pack that attaches right to the factory racks. Then i would recommend getting the wide load bars. As long as you are paddling plastic molded kayaks, not fancy Kevlar or other space age materials, all you gotta do is lay the yak flat upside down on the load bar with a strap over the hull at each bar. I roof topped 2 yaks thousands of miles this way with zero problems. It keeps a low profile and I swear I increased my MPG on my old 4Runner on extended trips. I'm not a fan of the J racks. It's just extra junk you have have on your roof. They act like sail boards and can push you all over the road in high winds and cause more drag on the car. I never use bow or stern ropes either-- 2 straps per boat, that's it.
I think my load bars are 65" and can handle 2 fishing yaks, side by side, laying flat upside down.