Looks like the Hunter is not in the list of boats that have been measured and qualified..
PHRF Lake Ontario Handicap Sailboat racing
www.phrf-lo.org
The MORC
The Midget Ocean Racing Club was a club fostering offshore competition between small boats, first under 24′ (7.3m) and expanded to under 30′ (9.1m) by the 1980s. Its rating rule, initially promulgated by the designer Bill Shaw, emerged from the CCA (Cruising Club of America) rule of the 1950s–60s and used a similar concept of corrections from a Base Boat. MORC measured sails, rig dimensions, beam, draft, waterline length, and both the length and transom width at 4% of LWL (length waterline) above WL (waterline) plus weighed the ballast and total boat. Ratings were expressed in feet. MORC favored relatively heavy boats with generous sail plans.
Not sure the transom of the Hunter would meet the 4% transom width.