Please be advised that conversion table you mentioned does not correct catamarans/multihulls. If I used that table my C 24 would move from PHRF 84 to PHRF 117 - the same rating as our J 29.

The conversion table was designed for mixing smaller monohulls with keelboats.

There are teams around the country working out some numbers so that cats and larger multihulls can participate in their local yacht club events.

The US Multihull Association Founding Committee is a few days away from becoming web - borne and active.