You are correct about the designer. A possible source of information may be some of the guys that sail in the Shark fleet. They have a web site if you hit Shark Catamaran you can find them. As I remember the Phoenix was the 18' version of the 20' Shark and a nice looking boat. What year and builder is your boat? I could not remember if your boat folds for trailering like the Shark or is street legal flat on the trailer. tell me a little about your experience with the boat and what part of the country are you sailing....and is there any others for sale in your area?