I'm a cheap skate....er very frugal. When I used to carry my extension ladder, I cut down 2 2x4's to fit in the stake holes on the 2000 GMC. Then I'd place the ladder on the top of the 2x4's nestled in the ladder channel side rail. Then I wrapped a long ratchet strap around the ladder to hold it down. Boom. Prolly not the most "aero" thing ever, but it got the ladder to and fro, and cost near nothing. The tension on the strap kept everything together with no fasteners required. It just took me longer to draw this illustration than it did to modify the studs.
