The hitch is mounted just in front of the axle so when you are pulling the sled is getting heavier it is putting the weight more in the center of the truck then the end of the truck. (Example) Goose neck hitch can pull more then a bumper hitch. Also the hitch is adjustable becuse the hitch has a max height and so when you change tires you can stay at that height. I hope that answerd your question "thumbsup"
thats sweet. how much does that piggy weigh so far?
really? looks like your past that already with all that steel in there