Jeff, a point of discussion:
If you're using actual (woven) braided nylon parachute shroud with unstructured polyester or nylon core, I agree it's light and easy to maintain and very convenient to a kayak user, et al. Not all the stuff sold in stores is the real thing.
Fishhawk: Roop has racks, most likely, and compression straps are perfect for rack mount; faster, cleaner, no figuring what to do with excess line, etc.
As I mentioned before, I don't have racks - that's why I use kayak pads and lines, as well as hitches and compression knots learned over timedo whatever is best for you, but don't lose the thing in the middle of the highway.