Hi Tom! Hey, I agree with Jan ... you need a minimum of a Class 2 hitch, even for a 16 foot trailer.
But, if you are going to err, err on the side of overkill .... if there is a class 3 hitch for your tow vehicle, I'd install it if I were you.
Reese offers a selection guide at:
There are many more drawbar combinations available for a class 3 (drawbars give you towing height lift or drop). Also more bicycle carriers and platform carriers.
is a good source and installer of hitches in the states.
In Canada, they've got this wonderful, wonderful place for all things towing called Canadian Tire that's worth the price of the trip up there!