Welcome to the forum. I don't have a Tundra, or a 19 footer, but know folks that do, and they do not use a WD hitch. However, if it were me, I would use one because it would help the ride and handling of the rig.
I would only advise you to not get too big of a hitch for that weight trailer. I think you would want a hitch rated for 600 pounds of tongue weight, max.
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