[Paddlewise] Towing/Drafting

I'm visualizing a towing rig involving about 18 inches of
pvc pipe on the tow rope that would allow close towing and
hopefully, high efficiency (drafting) and control over the
towee. It would run through the metal hoop (what's it
called?) to which the carrying toggle is affixed, and be
cleated near the cockpit. It would assume the towee has a
similar hoop on her/his bow.

Is that hoop strong enough?

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