The biggest reason to use a WDH is the tongue weight. Nearly every Class III receiver is rated for only 500 pounds without a WDH and somewhere near 1500 to 2000 with one. Your camper tongue weight is probably around 750 to 900 pounds.
Of course a WDH does not control sway, and most of us do not need sway control-that is the reason they put so much weight forward at the factory.
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