1994 GW catalog lists boat as a 25 Sailfish, with a centerline length of 25'4".
My experience is that a wet slip will either charge you for the boat length based on model (e.g. our 270 Islander is a 27ft boat, despite the bow pulpit and engines extending that significantly), or they will charge you for the slip length, e.g. the 35ft or 40ft slip you are in, despite the boat length. We are in a 35-ft slip and pay for 27ft.
Our experience with dry storage is that they measure the distance between perpendiculars dropped from the forward end of the bow pulpit and the aft end of the engine cowlings. We paid for 32ft when in dry storage.
Brian