Mike -
Before deciding you don't need a WDH, it would be well to read the two posts on the topic in the Trail Manor Technical Library. These posts will tell you what a WDH does and does not do, and how to tell if your particular rig needs one. Tow rating is less important than wheelbase and rear-axle-to-hitchball distance.
http://www.trailmanorowners.com/foru...ead.php?t=2616
http://www.trailmanorowners.com/foru...ead.php?t=2922
Bill