The issue I have with square or oval bars on a car like the Prius is the curved roof line causes any attachments to be installed at an angle. On mine, if you look carefully and pause at the beginning of the video I posted above, you will see I got maybe 20 degree angle up in the rear and about as much down in the front. Unless the attachments can rotate on the bars, they would be at an angle too...
I guess in my case this is exaggerated due to the extra wide spread between my front and rear bar and on a door-mounted setup it will be less of an issue...
I looked at Whispbars - they do look nice but would not have worked for my setup. I almost always take off the rack when not in use anyway, so having fancy bars doesn't add much to its utility. When I have the boats up or two snowboards and a few pairs of skis, the bars are the least of my problems wind-wise ;).
PFD's (Life Jackets)
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