Was wondering if it was necessary to hitch up a fifth wheel trailer in order to change tires, or if it can be done while standing on the front landing legs.
I've done it both ways and saw no difference in the outcome. You either have two stable frame to ground connections on the front or you have the front sitting on the trucks suspension. Either way you are barely moving the trailer frame as the suspension will allow you to jack one wheel off the ground without lifting the other. You are not going to bend the frame doing that.