I know this an old thread, so let me get it out of way. Holy thread resurrection Batman!
But just in-case the info is still useful to anyone. For years I used a Saris Bones 2, as stated it was a pain using both spots since it not designed for our car's spoiler. Though most of time I only needed the one spot, when I did to take two bikes I found it easier use the back seat and trunk.
The other issue with the bones is that it eventually left a bunch scratches on the bumper and trunk no matter how much cleaning I did before mounting. This didn't bother too much when paint was fading, but after the repaint I had to look at different options. I even bought a hitch, but never decided on rack for it(still in the garage).
Before I made up my mind the hitch rack I found the SeaSucker suction cup series of racks. I settled on the Mini-Bomber as it mount two bikes, kind of pricey at about $400, though they have single bike version for about $300.
This has been my bike hauler the last two years without any issues. I did have to get past the whole its suction cups holding my bike at highway speeds thing, but the system has been reliable, can be placed almost anywhere on car, easily goes on and off, and doesn't scratch my new paint.
Hope this helps if anybody looking into a bike rack.
Bones 2
Mini Bomber with 3 mounting points
Close up with only one mounting point
