A few years ago we had a spring to break on the fifth-wheel in Dalhart, Texas. The pickup was completely operative but the trailer could not "roll."
Good Sam Roadside Service arranged for a truck to come up from Amarillo about 80 miles away (as I recall.) This was a "low boy" trailer and the driver pulled the fifth-wheel (34') onto his trailer. He had to take back roads into Amarillo because there were overpasses which were too low on the main highway through Dumas into Amarillo.
It did take most of the day, but the tow itself was handled extremely well. Our trailer was taken to a very large truck facility which was able to make repair/replacement and get us back on the road the next day. We were able to drive the pickup to a motel.
On a different occasion we were about 45 miles west of West Monroe, Louisiana when we had a spring to break (please don't ask that question!:R) This time a truck was sent out from West Monroe without a trailer and the driver was able to make some temporary repairs so we could follow him back to the large truck facility where he worked. Again, it took many hours, but the tow was handled well.
Both these incidents were handled by Good Sam Roadside service. I believe they are better prepared to know what it might take with a fifth-wheel than some other services.
Hope this helps. BTW, we have replaced our springs with those of much heavier rating.