I used to pull with a goose neck adaptor made by Convert-a-Ball. No more, I am proof of what can happen. Pulled for three years with no issues. Then got back from the Black Hills, and realized the hitch was at an angle. The pin box flexed cracking the frame at the back side of the pin box on either side of it. Got lucky, and found a good blacksmith shop to do the repairs. The frames are made with 2 x 4 inch square tubing. They replaced it with solid stock, and braced it back with quarter inch angle iron. This was not a Lippert frame, this was a Leland. We traded the camper off, and now I tow with a fifth wheel hitch. Much easier to hitch and unhitch, better ride, easier to back up and removing the hitch is not a big deal. I will never pull with a goose neck adaptor again. I would not risk damage to your fifth wheel, do not use a goose neck adaptor.