they are very east to use. just determine the low side slide the BAL around the tire and crank up. The BAL has steel plates that hold the tire. Not sure if you would be able to use on a dual axle. I guess it would depend on how far apart the axles are, and I would think you would need 2
hokeypokey, tried to send you a PM but you have them turned off. I'm guessing you've already left, but I just saw your post. What route are you taking through Canada? I know a dealer that has one in stock in Canada that's on the way depending on which way you're taking. If by chance you read this before you leave or while you're traveling, send me a PM and I can give you more info and help you get it if you need.
2005 Fleetwood Victory
2008 Acura MDX Elite (tow vehicle)
2005 Ford Escape Limited (former tow vehicle)