I'll mirror others and if you meant the OEM plain jane setup not often by its-self and when I do I don't enjoy it. But I have a Yakima Load Warrior with the 18" extension the I keep up there pretty much non-stop. Carried pretty good loads of lumber, a dresser, bags, riding lawn mower attachements, all kinds of chit up there. And the Load Warrior give me much better tie down points to secure the load.
In-fact I've got a 17ft piece of 3" PVC pipe with threaded ends hooked to the Yakima right now. I use it to pickup 16ft pieces of interior trim and long lengths of steel tubing, etc. Tons easier than tie-ing that flimsy stuff down as it secures with 2 rubber bungie cords that allow no movement.