It also depends on the length of the drawbar. Take a look at Dimension "A" in the first picture here to see what I am referring to.
http://www.easternmarine.com/Trailer...unts-Drawbars/
By chance but not by knowledge, we ended up with a long drawbar. Take a look at this photo of our setup
http://www.trailmanorowners.com/foru...&pictureid=468
On the right is a standard non-WDH short drawbar. On the left is our WDH, with a long drawbar. You can see that on the left, the hitch ball is a good 6 inches farther from the bumper than on the right. This puts the trailer farther away from the tow vehicle, increasing the amount we can raise the tailgate. In our case, we can open the liftgate (the upper half of the tailgate) completely, which is nice.
However, a long drawbar also changes how the hitch weight comes down on the tow vehicle, making the distribution worse in some ways. So it is a mixed blessing.
Bill