I believe around 1000# is a pretty good planning number. I think this means pretty much any trailer hitch will work! \:\)

Most 16 ft drift boats are less than 400 with oars and anchor. I couldn't imagine my trailer weighs much more than 600 since it is fairly easy to lift and move without the boat on the trailer. My trailer is a heavy-duty baker with a metal roller.
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Wear a PFD if you want to live.