Given a choice, I do not tow, but ride the bike. However, when the wife wants to come along, the 5th wheel is a necessity since she does not ride. That is a problem that I am working on, but not holding my breath.
Based on my experience, I would not recommend this type of hauler for a 5th wheel and a heavy bike (> 500 pounds). It places way too much stress on the frame, and reduces your pin weight to the point that sway starts to become an issue. In its place, I would recommend a SmartTrailer, or something similar that places a good portion of the weight on the bike trailer tires. This link is to the SmartTrailer website.
Single Swivel Wheel Trailer
I bought a SL200 model over a year ago. Had a hitch made for my 5th wheel, and have put about 10,000 miles on it so far. It works like a champ, can not jack knife, but you need to be aware of the added length as it makes you swing wider than normal. I use it for my Street Bob, and it fits well. My Ultra is a tad too long right now due to the tour pak, the loading ramp hits it when folded up. Need to modify a little bit to accomodate the extra length. Other models will not have this problem.
One item to be aware of. If you are towing with the bike crosswise to the path of travel, tie down becomes critical. The forward and backward shaking (sideways on the bike) due to bumps in the road will really get the bike moving, and you need to tie it down tightly. My first trip, the wheel chock bent the front wheel because of this.
