I currently have a Kendon single and have towed my Harley {Dyna Super Glide} more than 12K miles over the last two years with great success. Just replaced the Dyna with my new 17 Springfield and look to continue the towing tradition. We tow behind our 24' Class C motorhome so we have all of the comforts of home everywhere we go.
Another big advantage to towing with the Class C is that the long overhang {159" WB} along with the dually mudflaps protect the bike completely from any road debris, not a single nick or scratch in 12K+ miles. The fact that the bike/trailer sit low and centered behind the coach also helps.
As you can see the bulk of the weight sits forward of the axle and the trailer is low enough to making loading a piece of cake. {the purple towel was quickly placed to protect the paint from some pretty serious hail up in the White Mountains {at 9,200'} last summer during a monsoon thunderstorm}.
Another huge advantage that comes with owning a Kendon is its storability. The rear half of the deck folds forward and you can easily lift the entire trailer up into a vertical position where it rides on three heavy rubber casters. Once vertical you can just roll it up against the wall storing it with a minimum footprint. The trailer weighs about 200# so raising and moving it is very doable.
The downside to this rig is that the biket is out in the open, vulnerable to weather and prying eyes. With some even longer trips planned I am in the market for a nice enclosed trailer {10' would be perfect} which would give me some additional storage for gear that I don't want to load into the coach. I'll look forward to following this thread with a new trailer in mind. When it is time to make the change the Kendon will disappear like a virgin on prom night off of Craigslist as they are very hard to find - got this one there for $1,450}
{That is a bicycle rack stored up against the wall behind the trailer]