[A4] Can I add a trailer hitch to my A4?

[Brizax at aol.com]

depends on the weight your towing, u can get a roof mount box for storage  
that straps on, if u want to pull a trailer your going to need a hidden hitch  
bracket that bolts onto the frame underneath 

Anyone  have any experience with trailer hitches on A4s?  I need a  temporary
solution to a small problem of hauling a small trailer around for  a day.
Can I get a strap on hitch for my A4?  If so, how much and will  it damage
the car (paint, bumper, etc)?