As the article title says, I'm a bit anal about how I tie down my bikes. But, I'm old, cranky and don't care if my riding buddies don't like it, so I'm good.
1. Cinch down the straps like you normally would.
2. Tie a simple knot below the friction buckle with the loose strap and slide it up against the buckle. The knot doesn't need to be tight. Its purpose is so that in order for the friction buckle to loosen, it has to suck the knot through it (not happenin').
3. Take the excess, loose strap and feed it through the eyelet on the top s-hook and route it downward.
4. Finally, tie a slip knot, securing the loose strap to the tight portion of the strap below the friction buckle by pulling the slip knot loop downward until tight.
I've been securing bikes like this for many moons and I've never had a since issue. Of course, this assumes that the strap webbing is in good shape to begin with. And no, this doesn't mean you can now drive like Mario Andretti when hauling your bikes. Leave the haulin' A for the track or trail.