I have the same type hitch you do, and I bought a folding rack from Just-Rite:

http://www.justriteracks.com/br3ballmounted.asp

I've got no affiliation with these guys, I'm just a fairly satisfied customer.

The pros:

         - The rack folds down easily to allow you to open the rear hatch,
easy enough with one bike attached, I never tried with a full load.
         - Locking knobs are available (but cost extra) so your bikes can
be locked to the rack. The hardware supplied with the rack locks it to the
base.
         - The rack can be removed when you are not toting bikes (leaving
only a small piece attached below your hitch ball).

The cons:

         - I needed to perform some elaborate bungee-engineering to keep
the handlebars and front wheel from hitting the hatch, I think I'd have the
same problem with any rack, though.
         - When the rack is removed, the mount juts back a bit at knee
height... can be a hazard when working around the engine compartment. I
think I have invented some all-new cuss words.

Tim

At 08:58 AM 6/2/2004 -0500, Spinoso, Tom wrote:
>Hi,
>
>
>
>I have a small hitch mounted to the tow loops on my 91 Carat.  It was told
>it would support 1500 lbs (for what that's worth).  It does non have a
>hitch/receiver that I can remove only a ball that seems to be connected with
>a nut from below.  I would like to carry 2 bikes.  Does anyone have any
>experience or recommendation on a brand or model that they have used or
>might work well?  Thanks in advance.
>
>
>
>"chasin' rainbows" - 91 Carat
>
>Tom