Being a multihull enthusiast like Bob (we sail a 20 foot Corsair trimaran and a J 70) I have asked the ORR EZ national officials if they would be able to generate ORR EZ ratings for multihulls that would enable them to race against monohulls. Given the ratings for multiple courses and wind ranges for each boat under ORR EZ it would seem possible. Unfortunately I was told an unqualified NO. They do plan to have multihull ratings but I was told that they would not be equivalent to the monohull ratings. At this point going forward unless there is a PHRF component (which I understand is being phased out in the GYA) mixed fleets may be a thing of the past locally..