This company will sell the swivel wheel suspension unit,
but you need to buy two hubs and the wheel and tire
to finish it out and the other steel ectc. to make your own
swivelwheel trailer.
http://www.doublehitch.comhttp://www.doublehitch.com/dhbuy.htmlP.S. They show their "double hitch" being used with
a single receiver on a pickup truck. [I'd guess that's a class III
at least.] I would go to the trouble and expense to have a couple
receivers added/welded to the hitch at the appropriate spacing
for dual connections - just me being extra cautious. You could
still use the center receiver for "normal" towing. I don't know if
a class I single receiver - often the only choice on a smaller vehicle -
would be strong enough to use as a single mount for the dual
hitch as they show in their pics/videos. I'd go for the extra margin
of safety that dual receivers would give. Don't forget, the early ones
used dual mounted hitches/connections that bolted to the steel
bumpers of those times. [
http://www.singlewheel.com/ ] Those do
not exist on cars anymore so you'd need to use the bolt-on/weld-on
hitches that are now available for your car [ try u-haul] and make
your safe modifications/additions there.
If you have a house - you have a hobby.