Vic99 wrote:
I would definitely use a slider hitch.
It totally depends on the setup as to what he needs. I assumed I needed a slider hitch but with my short bed and a longer kinpin on the trailer I bashed into my tailgate before I could slide the hitch all the way back. I switched to a rail mount Andersen flipped back and it clears my tailgate and I seem to be able to turn plenty tight. I'm not sure if I could quite turn 90 degrees but I'm also not sure what good cranking my trailer all the way to 90 degrees would do.
I think 4' is a good ballpark estimate on what you'll gain versus a rear hitch mounted travel trailer. Getting a shorter overall package is one of the benefits of going to a fifth wheel.