Jake,
If someone qualifies on a Uni boat,they just select a crew.
It is my understanding that it is the skipper of the boat whi qualifies and he can change crew for the Cup if he wants.
In last years Cup Chris Batchelor qualified in Area E(second place) on an I17R, Troy King qualified in Area F(second place) on an A Class, and Rush Bird qualified for Performance on a N5.5U(National Champ).
A Uni sailor picking up a crew is probably not as difficult as the average Hobie 16 crew learning to fly a chute.

Back To John's original quaestion.
The Hobie 17 Sport w/jib DOES NOT have a racing class or Class rules.
It obviously can't comply with rules which don't exist.