Handicap / Rating for Morbics?

Does anyone race their Morbic or know if there is a PY* or other racing handicap for them?

Reading Sailing Club rated Proteus at PY 1400 (seems a bit harsh?).
Falmouth Classics dimensionally calculated OGA (TCHF) handicap for Proteus 0.7467.
There doesn't seem to be anything definitive on RYA website.  Unsurprising?  Morbic is probably not considered a racer!

*(PY = Portsmouth Yardstick)