I am fairly sure that my paper reviewing (early) spinnaker rigging systems is in the Members’ Library, and it is certainly also on the GP14 Owners Online Community site.
I hasten to add that in this case to a very large extent I merely collated the work of others, much of it from “The Basic Boating Book” which used to be published by the Association but which I suspect is now out of print – although it would be worth an enquiry to the Office to see whether we have any copies left.
Oliver