Well Larry,
As you might have gathered, that link you posted isn't getting too much praise. I wouldn't use that kind of mechanism if someone paid me to. Yes, I know it's cheap method for hauling M/Cs but, without a doubt, it could also be the most costly if, your M/C rear tire gives up the ghost when you're cruising at around 65 or so. As has been suggested, there's multiple other ways to do it. Heck, I'd even give this one a look-see to see if you might like it. Waaaaaaaaaay better than dragging your nice bike behind your M/H and not knowing what's happening to it. Not to mention all the wear and tear of that entire drive train and you're not even riding it.
http://www.cruiserlift.com/swivelwheel-58-dual-wheel
But, there's all kinds of means to tote your bike out there besides that mess. Good luck.
Scott