Jamie,
I have found the issues at the back of my wardrobe! The Shirley Ann feature ran from November 1988 to January 1989 so there are quite a few pages, some of which are supplementary drawings.
If you are serious about wanting to build this boat I can scan them over the next few days and email them to you but I want to hang on to the main plan so you will need to buy that from MyHobbyStore.
Please confirm if you want me to go ahead.
Colin