Fifth Wheel or Goose Neck

Don't.

(from a retired Professional Structural Engineer)

I was thinking the same thing just before we got our Montana last year. After doing a lot of searching on various forums I found that for larger 5ers a gooseneck is NOT the way to go. Reason being the way the frames are made. Compare the frame on a gooseneck flatbed trailer (they all have pretty much the same kind of frames) to that of a 5er (most manufacturers have drawings showing how they build theirs). They are very different as a gooseneck hitch puts much more strain on the trailer frame than a regular 5er hitch. Some people have used them and say they've had no problems, but I'm not one to risk my substantial investment doing it. Arctic Fox's are well made, but I doubt they would say it was OK to use a gooseneck as well.

Also, if there's any frame warranty, using a gooseneck will most certainly void it.

Frequent question. Rather than repeat it all look at previous posts on goosenecks.

No personal experience, but I've seen many posts warning of undue stress being placed on the frame, and some manufacturers voiding warranties for that damage due to the use of a gooseneck. It may be urban legend, but do your homework before deciding. Good luck!