Scoring PY and YTC boats in the same race

We have a one off winter race coming up consisting of both dinghies on PY numbers and keelboats on YTC.
How should this be scored? All as PY (seems wrong), using the fleets option with dinghies as PY and the keelboats as NHC (internal?), or some other method that I’ve not yet thought about?

Many thanks.
Regards, Jools.

Hi Jools,

Although both RYA PY and YTC use the same formula for the corrected time and the rating value for both look similar, the premise behind the two is completely different.

Look at the classes below

Class                    YTC                   PY
Flying Fifteen        1108-1153              1028
Squib                 1095-1102              1110
SB20                    919-933               911

So personally I do not think you can score as one cohort of competitors. I would be interested in the views of others.

Kind regards,
Huw