We just got our first fifth wheel and I feel your learning pain. As has been hinted here, but let's just say it, you do not need a slider for driving forward. Backing up is where it's needed occasionally. With our Puma which does not have extremely rounded front corners, and an F-350 short bed, I can do a 180 degree turn with the front wheels cranked around to the stop with out hitting the cab. As was pointed out in another thread sliding the hitch back results in greater steering influence. Never thought of that--gonna' try it. I would get a slider just to be sure--I did. The pivot king pin referred to by the dealer is probably a sidewinder. Some frame makers will not warranty when a sidewinder is used because of different stresses.