As in a hitch rack that still allows you to tow a trailer. I need to be able to transport three bikes. Umm...cost is also a big factor.

I found a BVG Vise Grip bike rack for a very low price; it is a type that clamps onto the 2" drawbar of a hitch. I have an appropriate hitch on the back of my SUV, has anyone used this kind of hitch rack? Is it stable?

I'm pretty new to biking, other than the riding I used to do as a kid...