From the GYA PHRF bylaws May 2022.
a. A boat that does not have a permanent wet slip or does not have anti-fouling bottom paint, or a boat that has anti-fouling bottom paint but is normally kept out of the water the owner must have declared on their PHRF certificate DRY sailed. All other boats will have WET sailed declared on their PHRF certificates. The PHRF committee will decide whether or not the class’s BASE rating is based on WET or DRY sailed and will, on a case-by-case basis, adjust the NET rating by +3 or -3 seconds for the boat(s) within the class that are different.
So, if you are still using the legacy PHRF ratings (not the same as ORA1)., then this rule is applicable.