I saw a guy with a 24' Bennington pontoon swinging on davits behind
his "big boat" in the New River.
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Increasingly popular with the megayacht crowd is to tow a good sized
center console about 100 yards back. They use hi-tech tow line that
floats and is stronger than steel, and the center console will be
outfitted with a large stainless steel towing strap on the bow just
above the waterline.
Why not just swing it?
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I assume you mean from davits? Only the very biggest could do that. A
center console in the 30 ft range with a T-top and 2 or 3 large obies
takes up quite a bit of space. Towing doesn't seem to be a problem
for them since they have professional crew available to take care of
the details. They put a crew member aboard for entering and leaving
harbors.